I need help with gaining muscle, what should i eat?

Enough protein: You need to focus on geting enough good quality protein. Whey protein supports muscle growth the best. You can supplement your real food protein with whey protein shakes and shoot for at least half your boby weight in grams of protein ingestion eaach day. This will vary depending upon gender and starting lean body mass compared to your body fat percentage, and how hard you train. Watch you sugar.