Occasionally, we at OStatic round up our ongoing collections of open source resources, tutorials, reviews and project tours. These educational resources 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 more than 40 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.

As I'm getting familiar with the new Release Candidate 1 of Firefox 3.5, I'm also busy trying out my favorite Firefox extensions to make sure they all work with it. I'm happy to report that may most favorite Firefox extension, iMacros, works like a charm with it. If you haven't used iMacros, it can make you much more efficient, in many ways. The extension makes it about as easy to create macros for repetitive tasks you perform online as it is to operate a DVD player. You can even save macros that execute complicated tasks as Bookmarks. If you missed our step-by-step visual tour of how to create your first macro in iMacros, you'll find it here below the fold, and it's also worth looking at the iMacros demos available online. 

Everyone who uses Mozilla's Firefox browser knows that it gets much of its power from the thousands of useful extensions available for it. Some Firefox extensions are so powerful that they almost qualify as applications unto themselves, as I find to be true with the awesome iMacros extension. As announced on the Mozilla Add-Ons blog today, Mozilla has introduced Collections, which, among other things, will let you click one link to put a whole set of your favorite Firefox extensions on a new installation of the browser. You can find a video showing how Collections works here, and there are already several useful looking Collections available at the Add-ons for Firefox site (see the right side of the page).