I'd like to start a list of freely (and legaly) available electronics primer and course material, books and other stuff, similar to the datasheet database.
There were some great links in various topics but they get easily lost.freetechbooks.com
has dozens of books on various topics.
Mostly computer sciences, programming and mathematics but also electric circuits and signal processing.
New material are added, a RSS feed is availible.
NEETS (Navy electricity and electronics training series) link
The Complete NEETS (Navy electricity and electronics training series) is available here http://www.phy.davidson.edu/instrumentation/NEETS.htm in PDF which you can download for FREE.Answers to asignments are NOT included if you are not 100% certain your answer is correct reread the lesson ALL answers are in the text.If you get stuck post on the forum.The module you need (for multivibrators ) is #9, but all are worth a read.