This is a very good book on the subject:
http://www.amazon.co.uk/Mixing-Secrets-Small-Studio-Senior/dp/0240815807/re...
The bad news is that learning to record and mix really well involves a lot of time and experience, far more so than learning video editng for example - the good news is it's very rewarding. More than anything you need to be able to train your ears to hear things you probably can't hear at the moment!
Simon Ubsdell
http://www.tokyo-uk.com