tutorial search on data recovery
I'm just a newbie entering the field of computer forensics. As of the late, I've been searching the web for tutorials on data recovery techniques on hard drives (running Windows/Linux) that have been wiped clean or slighty damaged but with it's disks/cylinders intact. But I always end up on websites of software products related to data recovery.
Can anyone suggest a website(s) that has some tutorials? Or if not a website, a good technical book on the subject matter?