Zed's python book: http://sheddingbikes.com/LearnPythonTheHardWay.pdf

Mark Pilgrim's http://diveintopython.org/ is a good continuation to this book if you're interested in learning Python. It's also free, and there's a more recent version for Python 3 at http://diveintopython3.org/

Doh! Thanks. I should have linked to that :D (Everybody, check out this amazing, constantly updated (!) book that Zed wrote.)

The grandparent comment links version 0.1 of the book, get the current version (0.5 as of now) from the book's website at http://learnpythonthehardway.org/

(I found that out in the process of attempting to report an error in version 0.1 - it's already fixed in 0.5, and 0.5 is 4x longer.)

Hmmm, I should probably put up a pdf that says "there's a new version" at that URL.