diff --git a/README.md b/README.md
index 4c6a534..b0fa5ca 100644
--- a/README.md
+++ b/README.md
@@ -6,27 +6,69 @@ Exemple d'API GraphQL, PostgresQL, en Go
 go build && go run .
 ```
 
+Accéder à l'API :
+```
+http://localhost:8383/graphql
+```
+
+Accéder à l'UI graphiql :
+```
+http://localhost:8383
+```
+
 ## Query
 Toute rếquete visant à récupérer une donnée est appellée une 'Query'
 
 ```
-# Exemple de Query
+# Query via curl
 
 curl -X POST \
     -H 'Content-Type: application/json' \
-    -d '{"query": "{ user { id,firstname,lastname,roles{name} } }"}' \
-    http://localhost:8383/
+    -d '{"query": " query { user { id,firstname,lastname,roles{name} } }"}' \
+    http://localhost:8383/graphql
 
 ```
+```
+# Query via GraphQL
+
+query GetAllUsers {
+  user {
+    id
+    firstname
+    lastname
+    roles {
+      name
+    }
+  }
+}
+
+```
+
 
 ## Mutation
 Toute requếte visant à modifier une donnée est appellée une 'Mutation'
 
 ```
+# Mutation via curl
+
 curl -X POST \
     -H 'Content-Type: application/json' \
     -d '{"query": "mutation { createUser(firstname: \"John\", lastname: \"Snow\") { id,firstname,lastname } }"}' \
-    http://localhost:8383
+    http://localhost:8383/graphql
+
+```
+
+```
+# Mutation via GraphQL
+
+mutation CreateUser($firstname: String!, $lastname: String!) {
+  createUser(firstname: $firstname, lastname: $lastname) {
+    id
+    firstname
+    lastname
+  }
+}
+
 
 ```
 
@@ -35,10 +77,27 @@ Si besoin, lancer un serveur postgres via Docker
 
 ```
 mkdir $HOME/docker/postgres/volumes
+
 docker run --rm -d \
      --name postgres \
      -e POSTGRES_PASSWORD=postgres \
      -p 5432:5432 \
      -v $HOME/docker/postgres/volumes:/var/lib/postgresql/data \
      postgres
+
+psql -U postgres -h localhost
+> create user graphql;
+> alter user graphql with encrypted password 'graphql';
+> create database graphql;
+> GRANT ALL PRIVILEGES ON DATABASE "graphql" to graphql;
+> \exit
+
+psql -U graphql -h localhost
+> CREATE TABLE users (
+id SERIAL PRIMARY KEY,
+firstname TEXT,
+lastname TEXT
+  );
+
+
 ```
diff --git a/graphql b/graphql
index ed1aa99..618c0df 100755
Binary files a/graphql and b/graphql differ
diff --git a/main.go b/main.go
index 019002e..7b4b039 100644
--- a/main.go
+++ b/main.go
@@ -9,6 +9,7 @@ import (
 
 	"github.com/graphql-go/graphql"
 	"github.com/graphql-go/handler"
+	"github.com/mnmtanish/go-graphiql"
 )
 
 func main() {
@@ -38,9 +39,9 @@ func main() {
 	postgres.DBConnect()
 	defer postgres.DBClose()
 
-	http.Handle("/", httpHandler)
+	http.Handle("/graphql", httpHandler)
+	http.HandleFunc("/", graphiql.ServeGraphiQL)
 	log.Print("ready: listening...\n")
 
 	http.ListenAndServe(":8383", nil)
-
 }
diff --git a/queries/queries.go b/queries/queries.go
index 2347b31..e0f40b1 100644
--- a/queries/queries.go
+++ b/queries/queries.go
@@ -7,6 +7,6 @@ import (
 // GetRootFields returns all the available queries.
 func GetRootFields() graphql.Fields {
 	return graphql.Fields{
-		"user": GetUserQuery(),
+		"users": GetUserQuery(),
 	}
 }