I think you mean this one - http://developer.valvesoftware.com/wiki/Your_First_Map
Do that one first, then check the link in my sig, we've compiled all the best resources, it should hold the answers to pretty much any question you have.
thanks!
is there a +rep or a +karma here?
I can't understand why ppl post questions like this on the forum... It's "i'll-ask-but-not-search" kind of ppl...