It also depends on how much you already know. If you've shot with an SLR before and done developing/printing, I'd say don't waste your time unless you enjoy classroom learning. But if you're new to the art, it may be an invaluable way to get to know your camera, the basics of good shooting technique, and hopefully the elements of good composition.
Once you learn all of that, try to forget it all and discover what you like to shoot and explore that without feeling like there is a right or wrong way to photograph... your camera is little more than a very expensive toy, so have fun with it.