Update README.md

Author: jfullstackdev

README.md

@@ -1,2 +1,27 @@
-# blinking-led-arduino
-a blinking LED activity as the intro for Arduino Code programming
+# Blinking LED Arduino
+This is a blinking LED activity as the intro for 
+Arduino Code programming.
+
+## The Arduino Code
+Arduino is both software and hardware. Right there,
+you can control the design.
+
+There are two built-in functions in Arduino Code:
+`void setup` and `void loop`.
+
+`void setup` is where you tell the computer whether
+an electronic component being programmed is an
+output device. Other initial setup can be
+done here, like, the initial mode of an LED
+is turned on.
+
+`void loop` is where the execution of programs
+happen.
+
+Take note of the word `void`. A `void` type 
+of function will simply execute all the commands
+and will not return any value. Other functions
+which are not void can return values.
+
+## The Setup
+