I always find the RealBand videos from 2-5 to be particularly helpful for me when I was learning the program, also the audio effects feature I found particularly helpful when wanting to do any dynamic processing.

https://www.youtube.com/watch?v=En9Jq948m7w&index=25&list=PL2C8B3CA103A6273D

Audio Effects.
https://www.youtube.com/watch?v=WDMO1YDywD0&list=PL2C8B3CA103A6273D&index=22