diff --git a/C_tutorial/C_Advance/Makefile b/C_tutorial/C_Advance/Makefile
new file mode 100644
index 0000000..bb73e94
--- /dev/null
+++ b/C_tutorial/C_Advance/Makefile
@@ -0,0 +1,5 @@
+defaults:
+	gcc -o test.o struct_operation.c
+
+clean:
+	rm -f *.o
diff --git a/C_tutorial/C_Advance/dynamicArraystruct.c b/C_tutorial/C_Advance/dynamicArraystruct.c
new file mode 100644
index 0000000..63f3243
--- /dev/null
+++ b/C_tutorial/C_Advance/dynamicArraystruct.c
@@ -0,0 +1,30 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+typedef struct point {
+	int x;
+	int y;
+}Point;
+
+int main(){
+	Point pointArray[5];
+	printf("Enter the value first point x\n");
+	scanf("%d",&pointArray[0].x);
+	printf("Enter the value first point y\n");
+	scanf("%d",&pointArray[0].y);
+	
+	for(int i=0;i<5;i++)
+	{	
+		/*Enter code and innovate*/
+		printf("Enter the value point x string #%d \n",i+1);
+		scanf("%d",&pointArray[i].x);
+		printf("Enter the value point y string #%d \n",i+1);
+		scanf("%d",&pointArray[i].y);
+	}
+	for (int i=0;i<5;i++){
+		printf("Point #%d = (%d,%d)\n",i+1,pointArray[i].x,pointArray[i].y);
+	}
+	return 0;
+}
+
+
diff --git a/C_tutorial/C_Advance/exercise1.c b/C_tutorial/C_Advance/exercise1.c
new file mode 100644
index 0000000..7e35278
--- /dev/null
+++ b/C_tutorial/C_Advance/exercise1.c
@@ -0,0 +1,38 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+
+
+/*Exercise 2 :
+	Write the function :
+	Function 1:-get the function variable and prints it information
+	Function 2:-responsible for getting input from user and return it*/
+#include "stdio.h"
+#include "stdlib.h"
+
+typedef struct Point
+{
+	/* data for struct point x,y */
+	int x;
+	int y;
+}Point;
+
+void printPoint(Point pt) {
+	printf("The value of x: %d\n",pt.x);
+	printf("The value of y: %d\n",pt.y);
+}
+Point pointview(){
+	Point pt;
+	printf("Enter the value of x:\n");
+	scanf("%d",&pt.x);
+	printf("Enter the value of y:\n");
+	scanf("%d",&pt.y);
+	return pt;
+}
+int main(){
+	Point pt1;
+	pt1 = pointview();
+	printPoint(pt1);
+
+	return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_Advance/pointer.c b/C_tutorial/C_Advance/pointer.c
new file mode 100644
index 0000000..2d63584
--- /dev/null
+++ b/C_tutorial/C_Advance/pointer.c
@@ -0,0 +1,29 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+int  main(){
+    int num1 = 50;
+    int num2 = 100;
+    int *ptrA, *ptrB;
+    printf("The value of number:%d\t%d\n",num1,num2);
+
+    /*tro den gia tri num1 num2 : pointer khai bao*/
+    ptrA = &num1;
+    ptrB = &num2;
+    printf("The value of num1,num2:%d\t%d\n",num1,num2);
+
+
+    *ptrA = *ptrA+1 ;
+    *ptrB = *ptrB+3;
+    printf("The value new the number1 and number2 %d\t%d\n",num1,num2);
+
+    ptrA = ptrB;
+    ptrB = ptrA;
+    printf("num1 %d \t, num2 %d\n",num1,num2);
+    printf("*ptrA = %d, *ptrB = %d \n",*ptrA,*ptrB);
+
+    num1 = *ptrB;
+    num2 = num1 - 3 ;
+    printf("num1 = %d,num2 = %d \n",num1,num2);
+    return 0;
+}
diff --git a/C_tutorial/C_Advance/pointer_advance.c b/C_tutorial/C_Advance/pointer_advance.c
new file mode 100644
index 0000000..f2a5530
--- /dev/null
+++ b/C_tutorial/C_Advance/pointer_advance.c
@@ -0,0 +1,22 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+void findMaxMin(int num1, int num2,int *ptrA, int *ptrB){
+    if (num1>num2) {
+        *ptrA = num1;
+        *ptrB = num2;
+    }
+    else {
+        *ptrA = num2;
+        *ptrB = num1;
+    }
+}
+int main(){
+    int a = 10, b = 20;
+    int max,min;
+    findMaxMin(a,b,&max,&min);
+    printf("The value of max %d \n",max);
+    printf("The value of min %d \n",min);
+
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_Advance/pointer_pratice.c b/C_tutorial/C_Advance/pointer_pratice.c
new file mode 100644
index 0000000..661c83f
--- /dev/null
+++ b/C_tutorial/C_Advance/pointer_pratice.c
@@ -0,0 +1,27 @@
+// #include "stdio.h"
+// #include "stdlib.h"
+
+
+// int main(){
+//     int a = 5;
+//     int *p;
+//     p = &a;
+//     printf("%p \n",&a);
+//     printf("%p \n",p);
+//     printf("%d \n",a);
+//     printf("%d \n",*p);
+//     return 0;
+// } 
+
+#include "stdio.h"
+#include "stdlib.h"
+
+int main(){
+    int grade1 = 80, grade2 = 100;
+    printf("value of grade1 : %d \n",grade1);
+    printf("value of grade2: %d \n",grade2);
+
+    printf("Address of the grade1 %p\n",&grade1);
+    printf("Address of the grade2 %p\n",&grade2);
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_Advance/struct.c b/C_tutorial/C_Advance/struct.c
new file mode 100644
index 0000000..73c4145
--- /dev/null
+++ b/C_tutorial/C_Advance/struct.c
@@ -0,0 +1,39 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+// struct point {
+// 	int x;
+// 	int y;
+// }; 
+
+// struct date
+// {
+// 	/*struct in day for using cusomized data */
+// 	int day;
+// 	int months;
+// 	int year;
+// };
+
+/*typedef example */
+typedef struct date{
+	int day;
+	int months;
+	int year;
+}Date;
+int main()
+{
+	struct date graduteDate;
+	printf("Enter day:");
+	scanf("%d",&graduteDate.day);
+
+	printf("Enter months:");
+	scanf("%d",&graduteDate.months);
+
+	printf("Enter year:");
+	scanf("%d",&graduteDate.year);
+	printf("The my gradute day is (%d,%d,%d) \n",graduteDate.day,graduteDate.months,graduteDate.year);
+
+
+	return 0;
+}
+
diff --git a/C_tutorial/C_Advance/struct_members.c b/C_tutorial/C_Advance/struct_members.c
new file mode 100644
index 0000000..2daaba3
--- /dev/null
+++ b/C_tutorial/C_Advance/struct_members.c
@@ -0,0 +1,26 @@
+#include "stdio.h"
+#include "stdlib.h"
+#include "string.h"
+
+typedef struct employee{
+	char name[10];
+	float age;
+	int  id;
+}Employee;
+
+int main(){
+	Employee emp1;
+	Employee emp2 = {"Jake",25.4,123};
+
+	emp1 = emp2;
+	printf("Employee 1 is name %s\n",emp1.name);
+	printf("Employee 2 is name %s\n",emp2.name);
+
+	strcpy(emp1.name,"Join");
+	emp1.id = 456;
+
+	printf("Id of members %d\n",emp1.id);
+	printf("The name of members 1 %s\n",emp1.name);
+return 0;
+
+}
diff --git a/C_tutorial/C_Advance/struct_operation.c b/C_tutorial/C_Advance/struct_operation.c
new file mode 100644
index 0000000..1e1c2c1
--- /dev/null
+++ b/C_tutorial/C_Advance/struct_operation.c
@@ -0,0 +1,81 @@
+#include "stdio.h"
+#include "stdlib.h"
+#include "string.h"
+
+typedef struct point 
+{
+	int x;
+	int y;
+}Point;
+
+typedef struct employee
+{
+	char name[10];
+	float age;
+	int id;
+}Employee;
+
+int equalPoints(Point p1, Point p2) // "Operation =="
+{
+	if((p1.x == p2.x)&&(p1.y==p2.y)){
+		return 1;
+	}
+	else {
+		return 0;
+	}
+}
+int notEqualPoints(Point p1, Point p2) // "Operation !="
+{
+	if((p1.x != p2.x)||(p1.y!=p2.y)){
+		return 1;
+	}
+	else {
+		return 0;
+	}
+}
+
+int equalAge(Employee e1,Employee e2)
+{
+	if(e1.age == e2.age){
+		return 0;
+	}
+	else if (e1.age < e2.age) {
+		return -1;
+	}
+	else 	//e2.age > e1.age
+		return 1;
+}
+
+int equalName(Employee e1,Employee e2)
+{
+	if(e1.name == e2.name){
+		return 0;
+	}
+	else if (e1.name < e2.name) {
+		return -1;
+	}
+	else 	//e2.age > e1.age
+		return 1;
+}
+int equalId(Employee e1,Employee e2)
+{
+	if(e1.id == e2.id){
+		return 0;
+	}
+	else if (e1.id < e2.id) {
+		return -1;
+	}
+	else 	//e2.age > e1.age
+		return 1;
+}
+
+int main()
+{
+	Point point1 = {2,4};
+	Point point2 = {3,5};
+	if (equalPoints(point1,point2) !=0) {
+		// Code related to the fact that the points are equal
+		printf("The struct is not equal\n");
+	}
+return 0;
+}
diff --git a/C_tutorial/C_Advance/struct_test.c b/C_tutorial/C_Advance/struct_test.c
new file mode 100644
index 0000000..ec39b0d
--- /dev/null
+++ b/C_tutorial/C_Advance/struct_test.c
@@ -0,0 +1,31 @@
+// #include "stdio.h"
+// #include "stdlib.h"
+
+// typedef struct point
+// {	
+// 	int x;
+// 	int y;
+// }Point;
+
+// int main()
+// {	
+// 	Point p1;
+// 	Point p2 = {5,7};
+// 	Point p3 = {.x = 3, .y = 5};
+// 	Point p4 = {.y = 10, .x =5};
+// 	Point p5 = {.x=10};
+
+// 	return 0;
+// }
+
+ /*Write the function 
+ 	- Function 1: get the point variable and print this information
+	- Function 2: responsible for getting a point input from the user and the return it*/
+#include "stdio.h"
+#include "stdlib.h"
+
+int main()
+{
+
+	return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_Advance/typedef.c b/C_tutorial/C_Advance/typedef.c
new file mode 100644
index 0000000..773f146
--- /dev/null
+++ b/C_tutorial/C_Advance/typedef.c
@@ -0,0 +1,40 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+
+
+typedef struct date 
+{
+	int day;\
+	int months;
+	int year;
+}Date;
+
+void printDate(Date dt)
+{
+	printf("Year = %d,Months = %d, Day =%d \n",dt.year,dt.months,dt.day);
+}
+Date inputDate(){
+	Date dt;
+	printf("Enter day:");
+	scanf("%d",&dt.day);
+	
+	printf("Enter months");
+	scanf("%d",&dt.months);
+	
+	printf("Enter year");
+	scanf("%d",&dt.year);
+	return dt;
+}
+int main()
+{
+	Date graduteDate,todayDate;
+	graduteDate = inputDate();
+
+	todayDate = inputDate();
+	printDate(graduteDate);
+	printDate(todayDate);
+	
+	
+	return 0;
+}
diff --git a/C_tutorial/C_Algorithm/pratice1.c b/C_tutorial/C_Algorithm/pratice1.c
new file mode 100644
index 0000000..e6bff65
--- /dev/null
+++ b/C_tutorial/C_Algorithm/pratice1.c
@@ -0,0 +1,11 @@
+#include "stdio.h"
+
+int test(int x, int y) {
+    return x==y? (x+y)*3:(x+y);
+};
+// int test(int x,int y);
+int main(){
+    printf("%d\n",test(1,2));
+    printf("%d\n",test(2,2));
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_Algorithm/pratice2.c b/C_tutorial/C_Algorithm/pratice2.c
new file mode 100644
index 0000000..418975d
--- /dev/null
+++ b/C_tutorial/C_Algorithm/pratice2.c
@@ -0,0 +1,12 @@
+#include "stdio.h"
+
+int test (int n){
+    const int x = 51;
+    return (n>x)?(n-x)*3:(x-n);
+}
+int main(){
+    printf("%d\n",test(51));
+    printf("%d\n",test(52));
+    printf("%d\n",test(49));
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_Algorithm/pratice3.c b/C_tutorial/C_Algorithm/pratice3.c
new file mode 100644
index 0000000..c999984
--- /dev/null
+++ b/C_tutorial/C_Algorithm/pratice3.c
@@ -0,0 +1,11 @@
+#include "stdio.h"
+
+int test(int x, int y){
+    return (x==30|| y==30|| (x+y)==30);
+}
+int main(){
+    printf("%d\n",test(20,21));
+    printf("%d\n",test(25,5));
+    printf("%d\n",test(30,1));
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_Algorithm/pratice4.c b/C_tutorial/C_Algorithm/pratice4.c
new file mode 100644
index 0000000..6115c3f
--- /dev/null
+++ b/C_tutorial/C_Algorithm/pratice4.c
@@ -0,0 +1,12 @@
+#include "stdio.h"  
+#include "stdlib.h"
+
+int test (int x) {
+    return (abs(100-x)<=10)||(abs(200-x)<=20);
+}
+int main() {
+    printf("%d\n",test(103));
+    printf("%d\n",test(90));
+    printf("%d\n",test(89));
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_Algorithm/pratice5.c b/C_tutorial/C_Algorithm/pratice5.c
new file mode 100644
index 0000000..1044150
--- /dev/null
+++ b/C_tutorial/C_Algorithm/pratice5.c
@@ -0,0 +1,13 @@
+#include "stdio.h"
+#include  "stdlib.h"
+
+int test(int n){
+    return (n%3==0||n%7==0);
+}
+int main(){
+    printf("%d\n",test(45));
+    printf("%d\n",test(14));
+    printf("%d\n",test(3));
+    printf("%d\n",test(16));
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_Algorithm/pratice6.c b/C_tutorial/C_Algorithm/pratice6.c
new file mode 100644
index 0000000..d209925
--- /dev/null
+++ b/C_tutorial/C_Algorithm/pratice6.c
@@ -0,0 +1,13 @@
+#include "stdio.h"
+#include "stdlib.h"
+#define LOWER 0
+#define UPPER 100
+int test(int x, int y) {
+    return (x< LOWER && y> UPPER)||(y<LOWER && x<UPPER);
+}
+int main(){
+    printf("%d\n",test(20,100));
+    printf("%d\n",test(-1,120));
+    printf("%d\n",test(120,-1));
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_basic/Makefile b/C_tutorial/C_basic/Makefile
new file mode 100644
index 0000000..bcc5bce
--- /dev/null
+++ b/C_tutorial/C_basic/Makefile
@@ -0,0 +1,4 @@
+default:	
+	gcc -o code1.o convert_second.c 
+clean:
+	rm -f *.o 
diff --git a/C_tutorial/C_basic/code1.o b/C_tutorial/C_basic/code1.o
new file mode 100755
index 0000000..303f38b
Binary files /dev/null and b/C_tutorial/C_basic/code1.o differ
diff --git a/C_tutorial/C_basic/convert_second.c b/C_tutorial/C_basic/convert_second.c
new file mode 100644
index 0000000..08dd897
--- /dev/null
+++ b/C_tutorial/C_basic/convert_second.c
@@ -0,0 +1,18 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+int main()
+{   int totalsecond;
+    int second,hours,minutes;
+
+    printf("Enter the value for total seconds:");
+    scanf("%d",&totalsecond);
+
+    hours = totalsecond/3600;
+    minutes = (totalsecond -3600*hours)/60;
+    second = (totalsecond - hours*3600)%60;
+    printf("Total hours: %d \n",hours);
+    printf("Total minutes: %d \n",minutes);
+    printf("Total seconds: %d\n",second);
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_basic/pratice_area.c b/C_tutorial/C_basic/pratice_area.c
new file mode 100644
index 0000000..d0e0cd5
--- /dev/null
+++ b/C_tutorial/C_basic/pratice_area.c
@@ -0,0 +1,18 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+
+int main(){
+	double height, width;
+	printf("Enter the height \n");
+	scanf(" %lf",&height);
+
+	printf("Enter the width \n");
+	scanf("%lf",&width);
+	
+	double area;
+	area = height*width;
+	
+	printf("Area of the rectangle %lf \n",area);
+	return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_basic/pratice_arithemic.c b/C_tutorial/C_basic/pratice_arithemic.c
new file mode 100644
index 0000000..aa18662
--- /dev/null
+++ b/C_tutorial/C_basic/pratice_arithemic.c
@@ -0,0 +1,20 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+/* Formula : Sn = (a1+an)*n/2 */
+int main() {
+    float a1,d,an,Sn;
+    int n;
+    printf("Enter the Initail term \n");
+    scanf("%f",&a1);
+    printf("Enter the difference in the Arithmetic Sequence: \n");
+    scanf("%f",&an);
+    printf("Enter the number of elements in the Arithmetic Sequence: \n");
+    scanf("%d",&n);
+
+    Sn = (a1+an)*n/2;
+    printf("Sum of your sequence %f\n",Sn);
+
+
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_basic/pratice_average.c b/C_tutorial/C_basic/pratice_average.c
new file mode 100644
index 0000000..91ff7e5
--- /dev/null
+++ b/C_tutorial/C_basic/pratice_average.c
@@ -0,0 +1,16 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+float findAverage(float grade1, int grade2, int grade3){
+    float average; 
+    average = (grade1+grade2+grade3)/3.0;
+    return average;
+}
+
+int main(){
+    int num1,num2, num3;
+    printf("Enter the value of 3 number \n");
+    scanf("%d%d%d",&num1,&num2,&num3);
+    printf("The average of 3 number : %f\n",findAverage(num1,num2,num3));
+    return 0;
+}
\ No newline at end of file
diff --git a/C_tutorial/C_basic/pratice_function.c b/C_tutorial/C_basic/pratice_function.c
new file mode 100644
index 0000000..e4de481
--- /dev/null
+++ b/C_tutorial/C_basic/pratice_function.c
@@ -0,0 +1,31 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+
+
+int Maxvalue(){
+    int num1,num2;
+    int num3;
+    printf("Enter the value of the 3 number \n");
+    scanf("%d%d%d",&num1,&num2,&num3);
+    if (num1>num2){
+        if(num1 > num3){
+            return num1;
+        }
+        else
+        {
+            return num3;
+        }
+        
+    }
+    else if( num2>num3){
+        return num2;
+    }
+    else return num3;
+}
+int main(){
+    int max;
+    max = Maxvalue(); 
+    printf("The value of string function is max value is : %d \n",max);
+    return 0;
+}
diff --git a/C_tutorial/C_basic/pratice_swap.c b/C_tutorial/C_basic/pratice_swap.c
new file mode 100644
index 0000000..c39e3bf
--- /dev/null
+++ b/C_tutorial/C_basic/pratice_swap.c
@@ -0,0 +1,21 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+int main()
+{   int a,b;
+    printf("Enter the value a: \n");
+    scanf("%d",&a);
+
+    printf("Enter the value b: \n");
+    scanf("%d",&b);
+
+    // swap the value of pratice
+    int temp;
+    temp =a ;
+    a=b;
+    b=temp;
+
+    printf("The value after a: %d\n",a);
+    printf("The value after b: %d\n",b);
+    return 0;
+}
diff --git a/C_tutorial/C_basic/pratice_time.c b/C_tutorial/C_basic/pratice_time.c
new file mode 100644
index 0000000..7b881bb
--- /dev/null
+++ b/C_tutorial/C_basic/pratice_time.c
@@ -0,0 +1,16 @@
+#include "stdio.h"
+#include "stdlib.h"
+
+int main(){
+	float time_hours,time , distance, speed;
+	float temp;
+	printf("Enter the speed for the vehicle \n");
+	scanf("%f",&speed);
+	printf("Enter the distance from A to B\n");
+	scanf("%f",&distance);
+	time_hours = (float)(distance/speed);
+	time = time_hours*60;
+	printf("The time is vehicle : %f\n",time);
+	
+return 0;
+}
diff --git a/Command line Ubuntu.pdf b/Command line Ubuntu.pdf
deleted file mode 100644
index b0dd52c..0000000
Binary files a/Command line Ubuntu.pdf and /dev/null differ
diff --git a/Configure Raspberry.docx b/Configure Raspberry.docx
deleted file mode 100644
index 1aed75a..0000000
Binary files a/Configure Raspberry.docx and /dev/null differ
diff --git a/LPIC-1 Study Guide_5th Edition.pdf b/LPIC-1 Study Guide_5th Edition.pdf
deleted file mode 100644
index be6b6b8..0000000
Binary files a/LPIC-1 Study Guide_5th Edition.pdf and /dev/null differ
diff --git a/LPIC-2_LPIC_Study_Guide(2016)_2nd edition.pdf b/LPIC-2_LPIC_Study_Guide(2016)_2nd edition.pdf
deleted file mode 100644
index 5ee24dd..0000000
Binary files a/LPIC-2_LPIC_Study_Guide(2016)_2nd edition.pdf and /dev/null differ
diff --git a/keyboard-shortcuts-windows b/keyboard-shortcuts-windows
deleted file mode 100644
index ade3680..0000000
Binary files a/keyboard-shortcuts-windows and /dev/null differ
diff --git a/linux-command-line-and-shell-scripting-bible-by-richard-blum-christine-bresnahan.pdf b/linux-command-line-and-shell-scripting-bible-by-richard-blum-christine-bresnahan.pdf
deleted file mode 100644
index e2e83f4..0000000
Binary files a/linux-command-line-and-shell-scripting-bible-by-richard-blum-christine-bresnahan.pdf and /dev/null differ