Here is the next segment:  Reading circuit diagrams.   I was only going to make this video, then I realized it was't quite done.  I will get the second part up soon, hopefully tonight.

Reading Circuit diagrams part 1

Here are the two websites:

The first one is the different symbols used in circuit diagrams:

http://www.kpsec.freeuk.com/symbol.htm

The second is a very short piece on reading them.  I will do a better job in the second video:

http://www.kpsec.freeuk.com/cdiags.htm