For those who need a good review or would like some extra help to supplement what you are learning in EET 310, EET 315, or EET 420, the book shown below is not only a great help but it is also a very enjoyable read!
Bebop to the Boolean Boogie: An Unconventional Guide to Electronics,
Third Edition, ISBN 978-1-85617-507-4
Copyright 2009, Newnes Publishing (imprint of Elsevier)
Available on Amazon.com for less than $40. Used available.