Jim Wendler wrote an article about helping a friend get stronger. Have a read of that it gives a great approach (google is your friend).
The one tweak I would make is to try to begin limiting junk (say after 6pm on weekdays) right away and extend it over time.
The best advice I can give you us that it took 9 years to put the weight on, patience will be your best friend in getting it off because EVERYONE will have a quick fix, optimal approach for you. Always focus on where you want to be in 12 months time - not 2 weeks.