I think I managed to erase the original question, but one of y'all recently asked, "How do I learn electronics." As in circuits, making 'em, and understanding how they work. We talk up our favorites, (most of which you can find at your local RadioShack) from great books like Make: Electronics (we reference it all the time on DIYtryin, to no-soldering kid friendly kits like LittleBits, Snap Circuits, and the ever awesome, RadioShack Electronics Learning Lab Kit

http://www.radioshack.com/make-electr...
http://www.radioshack.com/electronics...
http://www.radioshack.com/littlebits
http://revision3.com/diytryin/
http://www.snapcircuits.net/