Buy the 5/3/1 book. Best $20 you will spend this year.
Get the 5x5 work out, if you want.
Follow the numerous programs on this site.
JUST START TODAY AND STICK WITH IT FOR A YEAR. We will talk again in July 2012.
Growing muscle is easy: Eats lots, lift heavy, get plenty of sleep. If you find yourself stalling, while following a program, it's because you are not eating enough, not following the program or/and not resting enough.
Once your diet is in check, whey protein and creatine is fine. But by then, you will have more knowledge, so you will answer your own questions.