Question xbmc and python


my raspberry pi is just arrived and setup with pre installed xbmc (openelec)
i was searching the web how about to make my own add-on, python basic
but i am stuck, i know how to make a python script but how do i put it on my raspi to run it?
has some one a good tutorial how to make one, it is a new world for me
my language are only PHP,HTML and some of java, so python is new to me.