Depends on your goals for one. Are you bulking up because you are skinny, or are you cutting down because you are chubby? Has to be one or the other to be efficient. Working out is about 50% diet, believe it or not.
www.bodybuilding.com is a good place to look for diet info. Go to forums, then to nutrition.
You really shouldn't work out if you don't have the knowledge, because you are wasting your time. So go there and learn then hit the weights hard.
I would post a good diet for you, but I'm not a fan of just posting diets without knowing anything about the person I am post it for, or that person's goals.
Good luck.