diff --git a/boucles/main.go b/boucles/main.go
new file mode 100644
index 0000000..3e5b083
--- /dev/null
+++ b/boucles/main.go
@@ -0,0 +1,61 @@
+package main
+
+import "fmt"
+
+func main() {
+	for i := 0; i < 5; i++ {
+		fmt.Println(i)
+	}
+
+	for i := 0; ; {
+		if i >= 5 {
+			break
+		}
+		fmt.Println(i)
+		i++
+	}
+
+	i := 0
+	for i < 5 {
+		fmt.Println(i)
+		i++
+	}
+
+	i = 0
+	for ; ; i++ {
+		if i >= 5 {
+			break
+		}
+		fmt.Println(i)
+	}
+
+	for i := 0; i < 5; {
+		fmt.Println(i)
+		i++
+	}
+
+	i = 0
+	for ; i < 5; i++ {
+		fmt.Println(i)
+	}
+
+	for i := 0; ; i++ {
+		if i >= 5 {
+			break
+		}
+		fmt.Println(i)
+	}
+
+	i = 0
+	for {
+		if i >= 5 {
+			break
+		}
+		fmt.Println(i)
+		i++
+	}
+
+	for i, j := 0, 10; i != j; i, j = i+1, j-1 {
+		fmt.Println(i, j)
+	}
+}
diff --git a/conditions/main.go b/conditions/main.go
new file mode 100644
index 0000000..47a6468
--- /dev/null
+++ b/conditions/main.go
@@ -0,0 +1,47 @@
+package main
+
+import (
+	"fmt"
+	"math/rand"
+	"time"
+)
+
+func main() {
+	var x = 1
+	if x > 5 {
+		fmt.Println("x est superieur a 5")
+	}
+
+	for i := 1; i < 100; i++ {
+		fizzbuzz(i)
+	}
+	// Decommenter cette ligne pour avoir l'erreur depassement de capacite
+	// fmt.Println(minRand(5000000000000000000))
+}
+
+func fizzbuzz(n int) {
+	if n%15 == 0 {
+		fmt.Println("FizzBuzz")
+	} else if (n % 5) == 0 {
+		fmt.Println("Buzz")
+	} else if (n % 3) == 0 {
+		fmt.Println("Fizz")
+	} else {
+		fmt.Println(n)
+	}
+}
+
+func minRand(min int) int {
+	rand.Seed(time.Now().UnixNano())
+	if v := rand.Int(); v > min {
+		return v
+	}
+	return min
+}
+
+func isEven(n int) bool {
+	if n%2 == 1 {
+		return false
+	}
+	return true
+}
diff --git a/constantes/main.go b/constantes/main.go
new file mode 100644
index 0000000..0afdbda
--- /dev/null
+++ b/constantes/main.go
@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+var User string = "E2L !"
+
+type person struct {
+	int
+}
+
+type aint int
+
+const (
+	BigConst      = math.MaxFloat64 * math.MaxFloat64
+	data     aint = 10
+)
+
+const (
+	a0 = iota // 0
+	a1 = iota // 1
+	a2 = iota // 2
+	a3 = iota // 3
+)
+
+const (
+	b0 = iota // 0
+	b1        // 1
+	b2        // 2
+	b3        // 3
+)
+
+const (
+	c0 = iota // 0
+	c1 = 43
+	c2 = 75
+	c3 = iota // 3
+)
+
+const d0 = iota //0
+const d1 = iota //0
+const d2 = iota //0
+const d3 = iota //0
+
+func main() {
+	fmt.Println(a0, a1, a2, a3)
+	fmt.Println(b0, b1, b2, b3)
+	fmt.Println(c0, c1, c2, c3)
+	fmt.Println(d0, d1, d2, d3)
+	fmt.Println("Vive " + User);
+}
+
diff --git a/fermetures/main.go b/fermetures/main.go
new file mode 100644
index 0000000..b729a31
--- /dev/null
+++ b/fermetures/main.go
@@ -0,0 +1,35 @@
+package main
+
+import (
+	"fmt"
+)
+
+func main() {
+	adder := func(a int, b int) int {
+		return a + b
+	}
+
+	fmt.Println(adder(5, 6))
+
+	counter1 := counter()
+	counter2 := counter()
+
+	fmt.Println(counter1())
+	fmt.Println(counter2())
+
+	deferredPrint()
+}
+
+func counter() func() int {
+	i := 0
+	return func() int {
+		i++
+		return i
+	}
+}
+
+func deferredPrint() {
+	defer fmt.Println("defer 1")
+	fmt.Println("regular thing")
+	defer fmt.Println("defer 2")
+}
diff --git a/interfaces/main.go b/interfaces/main.go
new file mode 100644
index 0000000..82236d0
--- /dev/null
+++ b/interfaces/main.go
@@ -0,0 +1,74 @@
+package main
+
+import (
+	"fmt"
+	"math"
+	"net/http"
+)
+
+type bob int
+
+func (b bob) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	w.Write([]byte("Salut tout le Monde !"))
+}
+
+type Circle struct {
+	Radius float64
+}
+
+type Rectangle struct {
+	Width  float64
+	Height float64
+}
+
+type Shape interface {
+	Area() float64
+}
+
+func GetArea(s Shape) float64 {
+	return s.Area()
+}
+
+func (c *Circle) Area() float64 {
+	return math.Pi * c.Radius * c.Radius
+}
+
+func (r Rectangle) Area() float64 {
+	return r.Height * r.Width
+}
+
+func main() {
+	circle := Circle{5.0}
+	r1 := Rectangle{4.0, 5.0}
+	r2 := &Rectangle{10.0, 15.0}
+	area := circle.Area()
+	fmt.Println(area)
+	GetArea(&circle)
+	GetArea(r1)
+	GetArea(r2)
+
+	var x interface{} = 10
+	fmt.Println(x)
+
+	str, ok := x.(string)
+	if !ok {
+		fmt.Println("Ne peut pas convertir l'interface x")
+	}
+
+	fmt.Printf("valeur: %v, Type: %T\n", x, x)
+	x = 1
+	fmt.Printf("valeur: %v, Type: %T\n", x, x)
+
+	fmt.Printf("valeur: %v, Type: %T\n", str, str)
+
+	var y interface{} = "go"
+	switch v := y.(type) {
+	case int:
+		fmt.Printf("Le double de %v vaut %v\n", v, v*2)
+	case string:
+		fmt.Printf("%q a une longueur de %v octets\n", v, len(v))
+	default:
+		fmt.Printf("Le type de %T est inconnu !\n", v)
+	}
+}
+
diff --git a/mots_reserves/main.go b/mots_reserves/main.go
new file mode 100644
index 0000000..c6d1c6b
--- /dev/null
+++ b/mots_reserves/main.go
@@ -0,0 +1,9 @@
+package main
+
+import "fmt"
+
+func main() {
+	int := 10
+	// var c int = 10
+	fmt.Println(int)
+}
diff --git a/operateurs/main.go b/operateurs/main.go
new file mode 100644
index 0000000..cf75cdc
--- /dev/null
+++ b/operateurs/main.go
@@ -0,0 +1,11 @@
+package main
+
+import "fmt"
+
+func main() {
+	x := 5*10 + 6/3 | 7%4&15 // same as (5*10) + (6/3) | (7%4)&15 = 50 + 2 | 3&15 = 52 | 3 =
+	fmt.Println(x)
+
+	a := true && false || true && !false
+	fmt.Println(a)
+}
diff --git a/pointers/main.go b/pointers/main.go
new file mode 100644
index 0000000..17ccfb9
--- /dev/null
+++ b/pointers/main.go
@@ -0,0 +1,68 @@
+package main
+
+import "fmt"
+
+func main() {
+	i := 10
+	fmt.Println(&i)
+	n := &i
+	fmt.Printf("%T\n", n)
+	fmt.Println(n)
+	fmt.Println(i)
+	*n = 15
+	fmt.Println(i)
+
+	j := 5
+	n = &j
+	*n = 6
+
+	fmt.Println(i)
+
+	a := 5
+	fmt.Println(a) // value is 5
+	pointer(&a)
+	fmt.Println(a) // value is 10
+	a = 5
+	fmt.Println(a) // value is 5
+	value(a)
+	fmt.Println(a) // value is still 5
+
+	ar := []int{1, 2, 3, 4}
+	fmt.Println(ar)
+	arrval(ar)
+	fmt.Println(ar)
+	arrpointer(&ar)
+	fmt.Println(ar)
+
+	m := make(map[int]int)
+	m[1] = 1
+	m[2] = 2
+	m[3] = 3
+
+	fmt.Println(m)
+	mapped(m)
+	fmt.Println(m)
+	m2 := map[int]int{1: 1}
+	mapped(m2)
+	fmt.Println(m2)
+}
+
+func pointer(x *int) {
+	*x = 10
+}
+
+func value(x int) {
+	x = 10
+}
+
+func arrval(a []int) {
+	a = append(a, 5)
+}
+
+func arrpointer(a *[]int) {
+	*a = append(*a, 5)
+}
+
+func mapped(m map[int]int) {
+	m[4] = 4
+}
diff --git a/portee/main.go b/portee/main.go
new file mode 100644
index 0000000..861a407
--- /dev/null
+++ b/portee/main.go
@@ -0,0 +1,68 @@
+package main
+
+import "fmt"
+
+type person struct {
+	name string
+}
+
+var p = person{name: "R Stallman"}
+
+func main() {
+	p1 := person{name: "Jane Doe"} // ici person definit en global
+
+	type person struct {
+		name string
+		age  int
+	}
+
+	p2 := person{ // ici person en local
+		name: "John Doe",
+		age:  27,
+	}
+
+	fmt.Printf("Type de p: %+v\tp1: %v\tp2: %v\n", p, p1, p2)
+	blocks()
+	scopes()
+	shadowing()
+}
+
+func blocks() {
+	i := 10
+	{
+		i := 5
+		fmt.Println(i) // i vaut 5
+	}
+	fmt.Println(i) // i vaut 10
+}
+
+var y = 100
+
+func scopes() {
+	x := 10
+	var z int
+	{
+		fmt.Println(x)
+		y := 15
+		fmt.Println(y)
+		z = 20
+	}
+	fmt.Println(z)
+	fmt.Println(y)
+
+}
+
+func shadowing() {
+	x := 10
+	{
+		x := 15
+		{
+			x := 20
+			fmt.Println(x)
+		}
+		fmt.Println(x)
+	}
+	fmt.Println(x)
+
+}
+
diff --git a/structures/main.go b/structures/main.go
new file mode 100644
index 0000000..b78c9f0
--- /dev/null
+++ b/structures/main.go
@@ -0,0 +1,74 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+type Wheel struct {
+	Circle
+	Material string
+	Color    string
+	X        float64
+}
+
+func (w Wheel) Info() {
+    fmt.Printf("Une roue est faite en %s de couleur %s\n", w.Material, w.Color)
+}
+
+type Circle struct {
+	X      float64
+	Y      float64
+	Radius float64
+}
+
+type Shape interface {
+	Area() float64
+	Area2() float64
+}
+
+func (c *Circle) Area() float64 {
+	return c.Radius * c.Radius * math.Pi
+}
+
+func (c Circle) Area2() float64 {
+	return c.Radius * c.Radius * math.Pi
+}
+
+func Area(c Circle) float64 {
+	return c.Radius * c.Radius * math.Pi
+}
+
+func ShapeArea(s Shape) float64 {
+	return s.Area()
+}
+
+func main() {
+	c1 := Circle{
+		X:      15.0,
+		Y:      12.0,
+		Radius: 8.5,
+	}
+
+	c2 := Circle{15.0, 12, 8.5}
+
+	fmt.Println(c1 == c2)
+
+	fmt.Println(c1.Area() == c1.Area2())
+
+	w1 := Wheel{
+		Circle: Circle{
+			Radius: 10.0,
+			X:      15.0,
+		},
+		Material: "Caoutchouc",
+		Color:    "Noire",
+		X:        5.0,
+	}
+	w1.Info()
+
+	fmt.Println(w1.Area())
+	fmt.Println(w1.X)
+	fmt.Println(w1.Circle.X)
+}
+
diff --git a/variables/main.go b/variables/main.go
new file mode 100644
index 0000000..f5a2d55
--- /dev/null
+++ b/variables/main.go
@@ -0,0 +1,24 @@
+package main
+
+import "fmt"
+
+var a = 10
+var b int8 = 122
+var c, d = 100, 200
+
+const PI = 100
+
+func main() {
+	var a = 10
+	var b = 1.5
+	var c byte = 'c'
+	var d = true
+	var e = '😀'
+	var f = "hello"
+	var g = 1 + 3i
+
+	var _1åœπbool = 10
+
+	fmt.Printf("%T\t%T\t%T\t%T\t%T\t%T\t%T\t%T\n", a, b, c, d, e, f, g, _1åœπbool)
+
+}