diff --git a/application_structure/main.go b/Section2/application_structure/main.go
similarity index 82%
rename from application_structure/main.go
rename to Section2/application_structure/main.go
index 7023b68..fc27e53 100644
--- a/application_structure/main.go
+++ b/Section2/application_structure/main.go
@@ -1,10 +1,11 @@
 package main
 
 import "fmt"
+
 const secondsInHour = 3600
 
 func main(){
 	fmt.Println("Hello Go World!!")
-	distance := 60.8 //distance in km
+	distance := 60.8
 	fmt.Printf("the distance in miles is  %f \n", distance * 0.621)
-}
\ No newline at end of file
+}
diff --git a/Section3/ex2 b/Section3/ex2
new file mode 100755
index 0000000..53ccd7e
Binary files /dev/null and b/Section3/ex2 differ
diff --git a/Section3/exercice1.go b/Section3/exercice1.go
new file mode 100644
index 0000000..8fabdc2
--- /dev/null
+++ b/Section3/exercice1.go
@@ -0,0 +1,9 @@
+package main
+
+import "fmt"
+
+func main() {
+	a := 1
+	b := 2
+	fmt.Println(a, b)
+}
diff --git a/Section3/exercice2.go b/Section3/exercice2.go
new file mode 100644
index 0000000..1a03942
--- /dev/null
+++ b/Section3/exercice2.go
@@ -0,0 +1,10 @@
+package main
+
+import "fmt"
+
+func main() {
+	a := 1
+	b := 2
+	c := a + b
+	fmt.Println("The addition of ", a, " and ", b, " is ", c)
+}
diff --git a/Section3/exercice6.go b/Section3/exercice6.go
new file mode 100644
index 0000000..7215578
--- /dev/null
+++ b/Section3/exercice6.go
@@ -0,0 +1,13 @@
+package main
+
+import "fmt"
+
+func main() {
+	SayHello()
+}
+func SayHello() {
+	fmt.Println("Hello package v1.0.0!")
+
+	var x int = 10
+	_ = x
+}
diff --git a/Section3/my_first_go_app b/Section3/my_first_go_app
new file mode 100755
index 0000000..53ccd7e
Binary files /dev/null and b/Section3/my_first_go_app differ
diff --git a/Section3/my_go_program_mac b/Section3/my_go_program_mac
new file mode 100755
index 0000000..81bbebe
Binary files /dev/null and b/Section3/my_go_program_mac differ