Now, I'm Canadian, so I don't know one whit about the US tax system except for one thing: Americans get to write off the interest on their mortgage.
Well, that and Americans pay way less tax than I do!
But the Paperback Writer has some more information for you as well as some resources. Check her out!
Also posting tax tips is Debbie Ridpath Ohi on her blog Will Write for Chocolate. I have only JUST found Debbie's blog, so I shall go peruse now... seems she has some tips for those of us North of the 49th as she's a Canuck too.