Finally, here’s a great book about CardSpace written by the my colleagues Vittorio Bertocci, Garrett Serack and Caleb Baker. I was talking to Vittorio earlier this morning about CardSpace for Windows Mobile devices and he pointed me to his blog. It’s a great source of information if you want to learn anything about CardSpace (Including trivia, like if you are wondering why the raccoon on the cover page of this book – it’s HERE). Be sure to check his awesome blog at Vittorio Bertocci
Also, check out Marc Mercuri's book on CardSpace...these should be more than enough to make you experts on CardSpace.