Green Links
redrok.com - tons of content on heliostat (mirror) based concentrator solar collectors, solar trackers as well as solar tracker electronics for sale including the LED3X.
builditsolar.com - Plans, tools and information to do renewable energy and conservation projects. Hundreds of projects -- from changing a light bulb to building a solar home. Design information and tools for building renewable energy projects. An Experimental section for backyard inventors. Nothing For Sale here -- just free ideas, plans, and information.
Living On Solar - A solar site from someone who is living on solar with videos and DIY plans for a solar cooler and solar tracker.
Affordable Solar Frames - Save lots of money building your own solar panels. ASF features instructional YouTube videos showing you how easy it is to build long lasting solar panels yourself starting with ASF's high quality frame kits.