I will give these 2 threads you probably need to read for starting on Bitcoin

https://bitcointalk.org/index.php?topic=7269.0 (New to Bitcoin? Start here!)
https://bitcointalk.org/index.php?topic=1244332.0 ([TUTORIAL] Earn Bitcoins Here! ◀▪▪▪▪▪▪▪▪)

And actually you will learn it by the time you doing it, so the first thing you need to do is just start to do an action. You will find the pieces by pieces of the information that you need to know when you're earning it as the process of learning.