I was browsing around and found this website that covers many different aspects of computer forensics in 17 seperate lectures. The notes are just that, notes, but they are enough to give anybody interested in forensics, or don't know if they are interested in forensics, a place to start. It has everything (almost) you need to know.
Each lecture has links at the bottom that lead you to other good sites that I have found to be helpful in the past.
Oops...almost forgot this: http://faculty.ncwc.edu/toconnor/426/426lects.htm