MOVING TO FRONT FROM FEBRUARY 9--SEVERAL OTHER LINKS TO CURRENTLY FREE BOOKS IN THE COMMENTS
The new book by Derk Pereboom (Cornell) on free will in the Cambridge Elements series is free online for the next two weeks! I've read a bit of it now, and have read Pereboom's other work: if you want to get a sense of the contemporary debate, this is a great opportunity! If there are other worthy titles in that series currently available for free, please note them in the comments. You don't need to format the hyperlink, just cut-and-paste the URL.