This tutorial is a lot better then the dev-centre-link for starters because it goes step-by-step instead of random scaterring across a hundred links, has examples and tells you where to put the almost-chinese texts.
Once it works, then you can try unravel the deeper mysteries. God bless shootorials and this one too.
This game is the optimum of options and plain old fun of kickin ass ;) 5/5!! Been a while since I played a game that could make a 'puzzle' based game this fun.