Sadly it looks like there have been many additions since the 1st edition. The chapters that were new in the second edition are here. EDIT: Or at least, that page has some chapters suggestively titled newchap0x.pdf, I'm not sure if they have all the new material or only new material, since it looks like the chapters have been rearranged as well.
I've heard that Stanford students use either the 2nd or 3rd edition. 1st one is quite a bit dated.
Stanford has decided to offer a few classes online, for free. These include Artificial Intelligence and Machine Learning. The classes include videos of the same lectures that the Stanford students received, quizzes, homework, and exams that are graded automatically. They start on October 10.
I'm guessing that more than a few LWers will sign up for these. How many people would like to form a study group? Should we just have a discussion thread for it, or is there a better option?