So evidently know I'm a Certified ScrumMaster. Yay.
You have to attend a two-day course, which if you are lucky like I am, will be with your friends. During the course, you get to practice your Scrum skills and take turns beating on each other to reinforce the principles of competitive cooperation. It was a fantastic course.
Much of the course principles were things I already had lots of exposure to, but there were some neat techniques in the course delivery that I thought were really first rate. It has been some time since I was in the instructor seat and such a hands-on course was a good refresher for me. The instructor Michael James is a little zen, but did an excellent job modeling the behaviors for the class.
If you haven't taken a Scum course, I highly recommend the training. Even if you don't intend to follow an adaptive methodology, the teaming techniques can be reliably executed in almost any environment.