I did one of Shane's classes down at Skull Creek years ago. Totally worth the money in my opinion. Spending money on suspension and lessons is the best offroad money spent. He'll work your butt off but it's all fun and you'll sleep good that night I guarantee you that. Just bring a willing attitude and try to do what he tells you to the best of your ability and you'll be just fine. By the end of day two I was doing things that I probably wouldn't have tried on my own just out riding with my pals. The real trick is practicing what he all he teaches you once you're back on your own.
Steve