It's up to the moderators about stickies but here you go :
Bails Scripting Tutorial ( Beta )
Scarzzurs Scripting Tutorial
Small Scripting
Google Scripting.

Good luck , Bails Scripting Tutorial is not finished yet so don't asking when or why not. Good luck , the rest of it counts on :
1) Reading the Amxx natives/functions in the : Amxx/Scripting/Include folder.
2) Looking at others code.
3) Asking questions on the Scripting forum.