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Hi:

There are very good message threads on this forum. Here is one of them
http://community.myfitnesspal.com/en/discussion/1080242/a-guide-to-get-you-started-on-your-path-to-sexypants/p1
Good luck in your healthy journey

Eat at a deficit and you'll lose. Lift weights, to retain muscle mass while losing, (help's tone you up).