There are many threads in this forum that deal with this subject. Try Horizon archives http://www.horizonhobby.com/
Jason Shulman and Frank Noll, Jr both have videos avalilable
http://www.jasonshulman.com/
Frank's is available from Carden http://www.carden-aircraft.com/
http://www.artistic-aerobatics.com/
http://www.mini-iac.com/main.asp

For learning there is nothing better than practice. Practice however doesn't mean just burning fuel. Add a notebook to your flight box. Plan for improving a particular skill at each session. Let's say you are uncomfortable flying inverted. Fly a figure 8 horizontal to the ground inverted in both directions. Practice slow flight and then reduce the altitude. Recover by ROLLING out not by elevator input.

EXCAP232