a good routine you can do for powerlifting as a beginner is the 5x5 routine. google it but ill give u the basics, not in depth. you lift 3 times a week with a day of rest in between the training days like Mon u lift, tues off wed lift thurs off friday lift sat and sun off. you do five sets of five reps. the workouts u do include the main compound lifts like bench, squat, incline, row and deadlifts. as far as eating, if u are 127, u dont need to worry too much. eat everything in sight. make sure its high in protein and high in carbs and u will be good. ill give u an example for breakfast that i currently do
Wake up - Protein shake mixed with 1 scoop of whey, peanut butter, ice cream, fruits like bananas and berries, 2 eggs, oatmeal oats, milk and ice, and flaxseed.
30 min later - 8 egg whites (i boil them) with a bowl of oatmeal and a bowl of fruit
good luck man!