"Handmade Electronic Music", by Nick Collins.
More good advice from the Rigster.
There's a second edition "expanded" version of the book that came out in 2009 and even includes a DVD. Next on my list to get as soon as I'm able to...
Also, Collins has some great electronic music that he has released thru the years. Seek them out....
You will find dozens of easy projects that are well explained. You will be able to have several "electronic music" devices to display.