how can i loose some chunk ive gained thats on my back below my arms???

Answer 1

find calorie/fitness calculator on the net, enter your stats and it will tell you how many calories a day you need to maintain your weight. take 300-400calories off that number and that's how much you need to lose weight.
eat 5-6 small meals a day instead of 3 big ones.
5-8 servings of fruit and vegetables a day.
8 glasses of water a day.
4-6 times a week cardio work out for 30-50min plus light weight training.
no junk food, no sodas, no white flour (white bread, pasta, cookies, cakes etc)

Answer 2

Weights and exercise bike, sweat belt sleep in it if you can, you can also use can food for weights, be consistance.