Saw this via a Zed Shaw site.
The C Book
It's a free book to learn C programming. There is both an online HTML version and a downloadable PDF version. Scanned initial parts of the book briefly, it seems good, though it is a bit dated - won't cover the latest additions to the C standard.
Yes, I know C is old, and there are tons of other resources already about it, but it's still a great language and I'll always like it (it was one of the first languages I learnt, and I used it a lot, and owed my living a good amount to it), and there are still lots of people who will still be new to C and want to learn it, so I'm blogging about it. So there :)
- Vasudev Ram - Dancing Bison Enterprises