No pain no gain

You might want to ask this questions in one of the more specialized boards, but in the meantime, welcome to the site and good luck. We're here for you!

Typically a clean bulk means a small calorie surplus (250-500 calories) not the types of food you eat. You can bulk on "clean" foods, but you'll quickly find that it's a different definition for everyone, and it's not necessary. Focus on calorie dense foods (there's a thread stickied in the important reads in the gaining section). Eat as many times per day as you prefer. Eating more often can help some people, but it can make others feel full (which is why it's often offered as a weight loss suggestion).