If you fancy doing Comptia Network+ course then would say get the learnkey Cd's and just watch the video's, very interesting and informative they cost £140 for the set. Yes you do get a goofy American (Mike Meyers AKA Alphageek) talking you through it all but he is the best at explaining stuff in a way you can relate to. You can get these from here
www.october-systems.co.uk