Where the hell does WSFSB ask you to do twice a day workouts? Depending on the version, it will have you perform 3-4 weight training sessions a week. Please read more carefully.
Concerning food, it's really simple:
Total calories BW x16-19
B x1.5-2.5g protein
B x0.5-1.5 fat
the rest of your calories should come from carbs.
Eat REAL food - meat, fish, dairy, eggs. Rice, legumes, potatoes. nuts, seeds, olive oil. As many vegetables and fruits as you want.
Both weight training and eating for it aren't complicated. Where most people fail is actually doing it, day after day, week after week, month after month.