So what is the best FREE available for a C# dev? Also if you have any really good books that aren't really related to C# but are still programming related fell free to post them also.
Just one rule: It has to be legal to download. I don't want illegal books on my HDD.
Wikibooks is a good source for free programming books. Here is the wikibook for C# programming.
Also, check out this question. It contains many links to free programming books, including these for C#.
Charles Petzold has written a free ebook aimed toward C and C++ programmers: .NET Book Zero.
For the german-speaking Stack Overflow users, there are quite a few free e-books available to view online/download from German publisher Galileo Computing.
Two of them are: