[AIped]

yes you should know about functions you see in the wiki.
and yes you should just start to try something.
why dont you just open pawno click on the left corner (new file)
then you already see alot of codes..those are callbacks.
check out any callback..type the name of the callback in the sa-mp wiki and read what it does.
If you understand callbacks, you can try what happens if you put a function in it.