diff --git a/processing.html.markdown b/processing.html.markdown
index f4b90882..2d70e082 100644
--- a/processing.html.markdown
+++ b/processing.html.markdown
@@ -4,26 +4,83 @@ filename: learnprocessing.pde
 contributors:
     - ["Phone Thant Ko", "http://github.com/phonethantko"]
 ---
+## Introduction
+
 Processing is a programming language for creation of digital arts and multimedia content, allowing non-programmers to
 learn fundamentals of computer programming in a visual context.  
 While the language is based off on Java language,
 its syntax has been largely influenced by both Java and Javascript syntaxes. [See more here](https://processing.org/reference/)  
 The language also comes with its official IDE to compile and run the scripts.
 
-```Processing
+```processing
+/* ---------
+   Comments
+   ---------
+*/
+
 // Single-line comment starts with //
 
 /*
-    Since Processing is based on Java,
-    the syntax for its comments are the same as Java (as you may have noticed above)!
-    Multi-line comments are wrapped around /* */
+   Since Processing is based on Java,
+   the syntax for its comments are the same as Java (as you may have noticed above)!
+   Multi-line comments are wrapped as seen here.
 */
 
+/* ---------------------------------------
+   Writing and Running Processing Programs
+   ---------------------------------------
+ */
+
 // In Processing, your program's entry point is a function named setup() with a void return type.
-// Note! The syntax looks strikingly similar to that of C++
+// Note! The syntax looks strikingly similar to that of C++.
 void setup() {
   // This prints out the classic output "Hello World!" to the console when run.
-  println("Hello World!"); // Another language with a semi-column trap, aint it?
+  println("Hello World!"); // Another language with a semi-column trap, ain't it?
 }
 
+// Normally, we put all the static codes inside the setup() method as the name suggests.
+// It can range from setting the background colours, setting the canvas size.
+// You will see more of them throughout this document.
+
+// Now that we know how to write the working script and how to run it,
+// we will proceed to explore what data types and collections are supported in Processing.
+
+/* -----------------------
+  Datatypes & collections
+  ------------------------
+*/
+
+// According to Processing References, Processing supports 8 primitive datatypes as follows.
+
+boolean booleanValue = true; // Boolean
+byte byteValueOfA = 23; // Byte
+char charValueOfA = 'A'; // Char
+color colourValueOfWhiteM = color(255, 255, 255); // Colour (Specified using color() method)
+color colourValueOfWhiteH = #FFFFFF; // Colour (Specified using hash value)
+int intValue = 5; // Integer (Number without decimals)
+long longValue = 2147483648L; // "L" is added to the number to mark it as a long
+float floatValue = 1.12345; // Float (32-bit floating-point numbers)
+double doubleValue = 1.12345D; // Double (64-bit floating-point numbers)
+
+// NOTE!
+// Although datatypes "long" and "double" work in the language,
+// processing functions do not use these datatypes, therefore
+// they need to be converted into "int" and "float" datatypes respectively,
+// using (int) and (float) syntax before passing into a function.
+
+
+
+
 ```
+Processing is easy to learn and is particularly useful to create multimedia contents (even in 3D) without
+having to type a lot of codes. It is so simple that you can read through the code and get a rough idea of
+the program flow.  
+However, that does not apply when you introduce external libraries, packages and even your own classes.
+(Trust me! Processing projects can get really large)  
+
+## What's Next?
+
+Here, I have compiled some useful resources:  
+
+ - [Processing Website](http://processing.org)
+ - [Processing Sketches](http://openprocessing.org)