Here are some useful links. These resources might have been written for a particular interest, but are usually of much broader utility.
starting a JUG from the bottom up is a lot of work. It's hard to quantify exactly how much of my time it took early on, but 10-25 hours per week is in the ball park. Nonetheless it is very rewarding, personally and professionally, and has been well worth the effort. This article reflects my own personal biases and is not intended to describe the only way to start a JUG. I'd encourage you to deviate from the procedures described here wherever your personal preferences dictate.Could be helpful, especially for determined workaholics. Also try Sun's JUGs Home Page