What's the best supplement to take for muscle-gains? (Details Included)?

I'm aware muscle milk collegiate is NCAA approved. Is this going to be as good as other products? I'm looking to steadily gain muscle over the next few months. I hear creatine and whey are good to use, but does anyone know a good source that is safe to use. I play soccer and I'm looking to build upper body as well as some explosive power and strength in the legs.