I've just been through the tutorial and I wanna say for anyone who is getting into CSS this tutorial IS A MUST !
I spent more than $100 on CSS books that to be quite frank have a bit to be desired in the way they assume you have a photographic memory, I don't have one but I'm working on it.
For 20 bucks this tutorial is a steal. It could have saved me $80.
WebAssist should be commended for this tutorial it is excellent.