[xwiki-users] A Real tutorial for creating Skins and Template ...

Hello all, I'm looking for a real tutorial (step by step or How to) for creating skins and template for XWiki ... I'm Looking for the Xwiki Documentation ... and it's not really understable ... Someone have some knoewledge about ? Thanx, Azz .. PS : If someone write a good Tutorial, I'll paid him/her beer in a wonderfull pub in Paris ...