diff --git a/debugging/src/buggy.cpp b/debugging/src/buggy.cpp
index ba52144..7afa088 100644
--- a/debugging/src/buggy.cpp
+++ b/debugging/src/buggy.cpp
@@ -21,18 +21,18 @@ class Student {
 
 Student* getStudent(){
   Student* myStudent = new Student(10801983,"Mary Wright");
-// ***** OPS!
-  return nullptr;  
+  return myStudent;  
 }
 
 void printStudent(Student* myStudent){
   std::cout << "-- Student's Data --\n";
-  std::cout << "Student's ID is " << myStudent->getName()
-            << " and name is " << myStudent->getID() << std::cout;
+  std::cout << "Student's ID is " << myStudent->getID()
+            << " and name is " << myStudent->getName() << std::endl;
 }
 
 int main(){
   Student* myStudent = getStudent();
   printStudent(myStudent);
+  delete myStudent;
   return 1;
 }
diff --git a/modernsyntax/classical_looping.cpp b/modernsyntax/classical_looping.cpp
index 6b0b0d5..db0d1d4 100644
--- a/modernsyntax/classical_looping.cpp
+++ b/modernsyntax/classical_looping.cpp
@@ -28,7 +28,17 @@ void indexLoop(std::vector<Tool>& tools){
 }
 
 void iteratorLoop(std::vector<Tool>& tools){
-  for(std::vector<Tool>::const_iterator tool = tools.begin(), end = tools.end(); tool != end; ++tool){
+  for(auto tool = tools.begin(), end = tools.end(); tool != end; ++tool){
+    tool->print();
+  }
+}
+
+void rangeLoop(std::vector<Tool>& tools, const int beginning, const int ending){
+  auto tool = tools.begin(), end = tools.end();
+  std::advance(tool,beginning);
+  auto stop_point = std::distance(tools.begin(), end) - ending;
+  
+  for( ; std::distance(tool, end) > stop_point; ++tool){
     tool->print();
   }
 }
@@ -42,6 +52,8 @@ int main(){
   indexLoop(tools);
   std::cout << "Start iterator looping" << std::endl;
   iteratorLoop(tools);
+  std::cout << "Start range looping" << std::endl;
+  rangeLoop(tools, 2, 4);
 
   return 0;
 }
diff --git a/modernsyntax/lambda.cpp b/modernsyntax/lambda.cpp
index da44e68..abdff60 100644
--- a/modernsyntax/lambda.cpp
+++ b/modernsyntax/lambda.cpp
@@ -13,7 +13,9 @@ void incrementCounter(int* counter, const unsigned int times){
 int main(){
   int counter(0);
   // launch a thread to increment the counter
-  std::thread increment(incrementCounter,&counter,100000);
+  
+  const unsigned int times = 100000;
+  std::thread increment([&times, &counter](){for (unsigned int i=0; i<times;++i){++counter;}});
   increment.join();
   std::cout << counter << std::endl;
   return 0;
diff --git a/modernsyntax/range_looping.cpp b/modernsyntax/range_looping.cpp
index ffd754b..228b6e4 100644
--- a/modernsyntax/range_looping.cpp
+++ b/modernsyntax/range_looping.cpp
@@ -21,8 +21,8 @@ class Tool {
 };
 
 
-void rangeLoop(std::vector<Tool> tools){
-  for(auto tool : tools){
+void rangeLoop(std::vector<Tool>& tools){
+  for(auto&& tool : tools){
     tool.print();
   }
 }