Stay away from buying any type of protein supplement, they are practically useless. If you are following a good diet high in carbs, protein, and fats, then the protein supplement you are buying is basically doing nothing. Since your diet is fulfilling your protein needs, you will pretty much just be excreting any other protein left in the system, therefore you are wasting money. Well, at least that's what I just learned in Wellness and Fitness class.
Creatine is a good supplement for lifting, but be sure to drink lots of water. Any type of supplement like creatine can cause you to become dehydrated and can lead to problems down the road. Drink lots of water, everyday.