Yea I'm 17 and have been lifting on and off since my freshmen year and its payed off and as long as I don't do it incorrectly it will continue to pay off. About creatine- what southpaw said was right and wrong (I believe) its puts water into your muscles, so the weight gain you've experienced is normal (water weight man) so that you're able to lift longer and higher weights (you feel the burn later than you normally would). Someone please correct me if I'm wrong! I would recommend NO Explode as a preworkout supplement, its worked really well for me, I started taking it around august, and switched to naNovapor for a while, and it just didnt do it for me. You get a great pump from it, I highly recommend it, if you can order stuff online its cheaper at bodybuilding.com then at GNC.
I heartily accept the motto, "That government is best which governs least"; and I should like to see it acted up to more rapidly and systematically.