Most band managers start out the same way: they start working for a friend's band that they're really into. There is no substitute for that kind of experience, and when it goes great, it changes the lives of everyone involved. And when it goes bad, well, it can be horrible. Not only may you burn a lot of bridges before you even really get started in the music biz, but the personal stress associated with a bad band-manager relationship can take a huge toll.
So, if you're considering cutting your management teeth on a band, how do know you should REALLY do it? No, it's not enough to say you love the music. There are plenty of other factors in play as well. Find out what you should look for in a band to manage, and then decide if you should get on board.