Eric Cressey has some good stuff on the internet and I think a youtube video as well.
Mike Robertson had a free e-book detailing different SMR methods and how's.
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."