diff --git a/Basic/00-helloworld.js b/Basic/00-helloworld.js
new file mode 100644
index 00000000..5abed49c
--- /dev/null
+++ b/Basic/00-helloworld.js
@@ -0,0 +1,28 @@
+// Esto es un comentario simple
+
+/*
+Esto es
+un comentario
+en varias lineas
+*/
+
+console.log("¡Hola, JavaScript!")
+console.log('¡Hola, JavaScript!')
+console.log(`¡Hola, JavaScript!`)
+
+//console.log(`¡Hola, JavaScript!`)
+
+/*
+console.log("¡Hola, JavaScript!")
+console.log('¡Hola, JavaScript!')
+console.log('¡Hola, JavaScript!')
+*/
+
+console.log("5")
+console.log(5)
+console.log(5 + 2)
+console.log(5 - 2)
+console.log(5 * 2)
+console.log(5 / 2)
+console.log(5 % 2)
+console.log(5 ** 2)
\ No newline at end of file
diff --git a/Basic/01-variables.js b/Basic/01-variables.js
new file mode 100644
index 00000000..e02e5e14
--- /dev/null
+++ b/Basic/01-variables.js
@@ -0,0 +1,24 @@
+//var
+var helloWorld = "hola, JavaScript!"
+console.log(helloWorld)
+
+helloWorld = "Hola de nuevo, JavaScript"
+console.log(helloWorld)
+
+
+//let
+
+let helloWorld2 = "hola, JavaScript 2!"
+console.log(helloWorld2)
+
+helloWorld2 = "Hola de nuevo, JavaScript 2"
+console.log(helloWorld2)
+
+//const
+
+const helloWorld3 = "Hola, JavaScript 3!"
+console.log(helloWorld3)
+
+//  Error
+//  helloWorld3 = "Hola de nuevo, JavaScrpt 3 !"
+//  console.log(helloWorld3)
\ No newline at end of file