I've dedicated this year to learning Flash with Actionscript 3.0, and Python with C. I've already got a number of ActionScript 3.0 books I haven't fully utilised yet, but I've had a lack of Python and C books. It's understandable for Python, but strange for C given it's one of the languages I know the best. Apart from a beginner C book which was okay when teaching myself but now isn't that great (C by Example by Perry), the only C book I used to have was Sedgewick's Algorithms in C Parts 1-4, which was a freebie I got after tutoring algorithm classes for several years. So I've made up for that with this batch of books.
New for Python is the O'Reilly book Python in a Nutshell by Martelli and the Python Cookbook which is still yet to arrive from Amazon. I've only skimmed over this book, but it looks like both a good learning and reference source.
For C, I've got the seminal Kernighan and Ritchie's The C Programming Language which I really should have got several years ago, and C: A Reference Manual by Harbison and Steele, the latter I'm planning to use as a main reference as it covers C99, something I'm not that clued up on.
Other interesting books I got was the classic writing book The Elements of style by Strunk and White, which is actually useful right now to help clean up my writing. And I also got a textbook Planetary Sciences by de Pater and Lissauer for no real reason other than I loved reading about the planets when young and now I've got a science education I learn it from a much deeper level. Plus it can't hurt if I ever make that epic space game I've been meaning to make.
