List of freely available Programming Books
conceptf1.blogspot.com
conceptf1.blogspot.com
EDIT: looks like this blog post is actually copied from the repositary I mentioned. The repo content in Nov 2013 [0] actaully matches to this blog post. It was originally found by a redditor [1].
[0] - https://github.com/vhf/free-programming-books/blob/b7cec2abc...
[1] - https://www.reddit.com/r/programming/comments/3d0c2p/list_of...
The first one is "Software Entwicklung in C" and it is an absolutely great book on building software in C. Personally, its the best I've ever read. The author is a meticulous architect, and really imbues solid software practices while teaching you how to build an embedded coffee machine. Also "Linux-Unix Programmierung" is a very detailed and comprehensive overview to all the linux libraries and their usage. If anyone can read german and does systems level development I would highly recommend both of those, especially the first one.
Its a shame these kinds of freely available resources just go completely missed most of time. Does anyone have other really good books in non-English that have also gone under the radar? It would be great if we could somehow get some of these translated...