Ask many people–including CIOs who are wary of allowing open source software in their organizations–about the manuals and documentation you get with many open source applications, and they’ll say that these guides leave a lot to be desired. There are, however, a lot of free, online books on open source topics available. We round these up on a regular basis here at OStatic, and in this post you’ll find our latest updated collection of online books that you can get in an instant. They introduce essential concepts for getting started with Linux, Firefox, Blender (3D graphics and animation), GIMP (graphics), and much more.