Boruki: A google search for creatine should give you a pretty good idea of what you are getting into. You should weigh the pros and cons and make a decision based on whats best for you.
You asked where you could get it from? I used a couple different brands but when it came down to it, I preferred the GNC brand creatine. Another place you might want to check is
www.affordablesupplements.com They have good prices and fast service.
Plan9: I'm in the same boat as you. I've used it in the past and saw some results, but I probably won't use it again.