diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 00000000..b8261cd7
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+click>=8.0
diff --git a/src/binary_converter.py b/src/binary_converter.py
deleted file mode 100644
index 57139210..00000000
--- a/src/binary_converter.py
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-#   Write a program that given a number as input convert it in binary.
-#
-#   Output:
-#   Insert first number: 8
-#   The binary number is: 1000
-#
diff --git a/src/budget/__init__.py b/src/budget/__init__.py
new file mode 100644
index 00000000..e2167122
--- /dev/null
+++ b/src/budget/__init__.py
@@ -0,0 +1 @@
+"""BudgetCLI — Personal budget manager from the terminal."""
diff --git a/src/calculator.py b/src/calculator.py
deleted file mode 100644
index 5eb03460..00000000
--- a/src/calculator.py
+++ /dev/null
@@ -1,12 +0,0 @@
-#
-#   Write a program that given two numbers as input make the main operations.
-#
-#   Output:
-#   Insert first number: 4
-#   Insert second number: 2
-#
-#   SUM: 6
-#   Difference: 2
-#   Multiplication: 8
-#   Division: 2
-#
diff --git a/src/ex1.py b/src/ex1.py
deleted file mode 100644
index 0069a9ab..00000000
--- a/src/ex1.py
+++ /dev/null
@@ -1,49 +0,0 @@
-# Implement this exercise from C++ to Python
-#
-
-# #include <iostream>
-# using namespace std;
-#
-# int main()
-# {
-#   int week;
-#
-#   /* Input week number from user */
-#   cout << "Enter week number(1-7): " << endl;
-#   cin >> week;
-#
-#   if (week == 1)
-#   {
-#     cout << "Monday" << endl;
-#   }
-#   else if (week == 2)
-#   {
-#     cout << "Tuesday" << endl;
-#   }
-#   else if (week == 3)
-#   {
-#     cout << "Wednesday" << endl;
-#   }
-#   else if (week == 4)
-#   {
-#     cout << "Thursday" << endl;
-#   }
-#   else if (week == 5)
-#   {
-#     cout << "Friday" << endl;
-#   }
-#   else if (week == 6)
-#   {
-#     cout << "Saturday" << endl;
-#   }
-#   else if (week == 7)
-#   {
-#     cout << "Sunday" << endl;
-#   }
-#   else
-#   {
-#     cout << "Invalid input! Please enter week number between 1-7." << endl;
-#   }
-#
-#   return 0;
-# }
diff --git a/src/ex2.py b/src/ex2.py
deleted file mode 100644
index 2ce418ef..00000000
--- a/src/ex2.py
+++ /dev/null
@@ -1,51 +0,0 @@
-#
-#  Implement the following code in Python replacing if/else if with an array.
-#
-#  Hint:  arr[3] = "Thursday";
-#
-
-# #include <iostream>
-# using namespace std;
-#
-# int main()
-# {
-#   int week;
-#
-#   cout << "Enter week number(1-7): " << endl;
-#   cin >> week;
-#
-#   if (week == 1)
-#   {
-#     cout << "Monday" << endl;
-#   }
-#   else if (week == 2)
-#   {
-#     cout << "Tuesday" << endl;
-#   }
-#   else if (week == 3)
-#   {
-#     cout << "Wednesday" << endl;
-#   }
-#   else if (week == 4)
-#   {
-#     cout << "Thursday" << endl;
-#   }
-#   else if (week == 5)
-#   {
-#     cout << "Friday" << endl;
-#   }
-#   else if (week == 6)
-#   {
-#     cout << "Saturday" << endl;
-#   }
-#   else if (week == 7)
-#   {
-#     cout << "Sunday" << endl;
-#   }
-#   else
-#   {
-#     cout << "Invalid input! Please enter week number between 1-7." << endl;
-#   }
-#
-#   return 0;
-# }
diff --git a/src/ex3.py b/src/ex3.py
deleted file mode 100644
index 74592df6..00000000
--- a/src/ex3.py
+++ /dev/null
@@ -1,43 +0,0 @@
-# What about implementhing this using "match" ?
-#
-# #include <iostream>
-# using namespace std;
-#
-# int main()
-# {
-#   string textInput;
-#
-#   cout << "Enter a famous name+surname, ex. BarackObama " << endl;
-#   cin >> textInput;
-#
-#   if (textInput == "BarackObama")
-#   {
-#     cout << "44th president of the United States" << endl;
-#   }
-#   else if (textInput == "SandroPertini")
-#   {
-#     cout << "Former President of the Italian Republic" << endl;
-#   }
-#   else if (textInput == "NelsonMandela")
-#   {
-#     cout << "Former President of South Africa" << endl;
-#   }
-#   else if (textInput == "MahatmaGandhi")
-#   {
-#     cout << "Bapu" << endl;
-#   }
-#   else if (textInput == "DonaldKnuth")
-#   {
-#     cout << "Creator of LaTeX" << endl;
-#   }
-#   else if (textInput == "DennisRitchie")
-#   {
-#     cout << "Creator of C" << endl;
-#   }
-#   else
-#   {
-#     cout << "Invalid input! Please enter a good name!" << endl;
-#   }
-#
-#   return 0;
-# }
diff --git a/src/ex4.py b/src/ex4.py
deleted file mode 100644
index a50ed47c..00000000
--- a/src/ex4.py
+++ /dev/null
@@ -1,56 +0,0 @@
-# Surprise me.
-#
-# #include <stdio.h>
-#
-# int main()
-# {
-#   int month;
-#
-#   /* Input month number from user */
-#   printf("Enter month number(1-12): ");
-#   scanf("%d", &month);
-#
-#   switch (month)
-#   {
-#   case 1:
-#     printf("31 days");
-#     break;
-#   case 2:
-#     printf("28/29 days");
-#     break;
-#   case 3:
-#     printf("31 days");
-#     break;
-#   case 4:
-#     printf("30 days");
-#     break;
-#   case 5:
-#     printf("31 days");
-#     break;
-#   case 6:
-#     printf("30 days");
-#     break;
-#   case 7:
-#     printf("31 days");
-#     break;
-#   case 8:
-#     printf("31 days");
-#     break;
-#   case 9:
-#     printf("30 days");
-#     break;
-#   case 10:
-#     printf("31 days");
-#     break;
-#   case 11:
-#     printf("30 days");
-#     break;
-#   case 12:
-#     printf("31 days");
-#     break;
-#   default:
-#     printf("Invalid input! Please enter month number between 1-12");
-#   }
-#
-#   return 0;
-# }
diff --git a/src/random_number.py b/src/random_number.py
deleted file mode 100644
index 4a1dffe4..00000000
--- a/src/random_number.py
+++ /dev/null
@@ -1,6 +0,0 @@
-#
-#   Write a program that generates a random number.
-#
-#   Output:
-#   The random number is: 4
-#
diff --git a/src/risk_risiko.py b/src/risk_risiko.py
deleted file mode 100644
index 8457f266..00000000
--- a/src/risk_risiko.py
+++ /dev/null
@@ -1,29 +0,0 @@
-#
-#   Write a program that simulates a risk/risiko fight using 6 dices.
-#
-#   How does it work?
-#   When a player attacks another player he uses 3 dices, the red is always the attacker and the blue is the defender.
-#
-#   You have to compare the dice with the highest number to simulate the fight.
-#   N = first highest number
-#   M = second highest number
-#   O = third highest number
-#
-#   If the numbers are equal, the defensor (blue) wins.
-#
-#   Output:
-#   Red dices:
-#   6 (N)
-#   3 (M)
-#   2 (O)
-#
-#   Blue dices:
-#   5 (N)
-#   3 (M)
-#   1 (O)
-#
-#     R    B
-#   N 6 vs 5 => red win
-#   M 3 vs 3 => blue win
-#   O 2 vs 1 => red win
-#
diff --git a/src/sum.py b/src/sum.py
deleted file mode 100644
index aaa982e4..00000000
--- a/src/sum.py
+++ /dev/null
@@ -1,6 +0,0 @@
-def sum(a: int, b: int) -> int:
-    return a + b
-
-
-if __name__ == "__main__":  # pragma: no cover
-    print(sum(3, 5))
diff --git a/src/verify.py b/src/verify.py
deleted file mode 100644
index bb8525a2..00000000
--- a/src/verify.py
+++ /dev/null
@@ -1,18 +0,0 @@
-#
-# Write a software that verifies if a number is present in a pre-defined array.
-#
-# Output example:
-# Insert number 3
-# The number 3 is [not] present in the array.
-#
-#
-# #include <iostream>
-# using namespace std;
-#
-# int main()
-# {
-#   // placeholder
-#   int N[10] = {3, 4, 5, 1, 2, 3, 4, 9, 13, 0};
-#
-#   return 0;
-# }
diff --git a/tests/test_sum.py b/tests/test_sum.py
deleted file mode 100644
index 4874e5c8..00000000
--- a/tests/test_sum.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from src.sum import sum
-
-
-def test_sum() -> None:
-    assert sum(3, 4) == 7
-    assert sum(0, 0) == 0
-    assert sum(1, 2) == 3