Eric Curts shares a wealth of information on GAFE apps - tutorials, resources, etc. I saw him on Classroom 2.0 Live doing a preso on Google Drawings. It was excellent and I want to check out his other resources.
"Life is filled with chaos, and we have to learn how to work and solve problems in the midst of it every day. These interactive lessons give you the opportunity to experience these daily challenges without real-world consequences."
"Welcome to our all new Basic Electronics Tutorials and revision web site, we hope you like it. The purpose of this site is to give students and beginners alike studying Electronics, good Basic Electronics Tutorials and information to help develop a knowledge and understanding of the subject of Electronics."