In this lesson you will learn about render layers using blender render engine and how you can organize your scene in order to ease out your compositing and color correction process.
Neat tutorial, Muhamed. But do you also do tutorials in Cycles? It works a little differently as far as renderlayers go, so all the help I can get is always welcome! 
Subbed you on YouTube.
I will asap … but I need to finish some researches first …