On a regular basis, we at OStatic round up our ongoing collections of open source resources, tutorials, reviews and project tours. These educational toolkits are a big part of the learning mission we try to preserve at the site. We regularly collect the best Firefox extensions, free online books on open source topics, free tools for developers, resources for working with and enjoying online video and audio, Linux tutorials, and much more. In this post, you'll find an updated set of almost 50 collections and resources. Hopefully, you'll find something to learn from here, and the good news is that everything found in this post is free.