Calculate your BMR
Calculate your maintenance calories
Eat cleanly over your calories, increase 250-500 per day on a weekly basis. Set your macronutrient goals at 35/35/30 (P/C/F or %Protein, %Carbs, %Fats)
If you give me your current stats and activitiy level I can calculate your BMR/MC and we can go from there in designing a diet for you.