I have a pretty decent six-pack. All I did was look(up) what you put in your mouth and Insanity. I'm currently doing T25 as I couldn't plan 1 full hour of workout everyday.

There are quite a few YT videos showing you routines you can do in limited time. The key is (also now when you've joined a gym) determination and actually going :)

Good luck

Thanks. I only plan to go to the gym 3 times a week. The most common frequency my personal trainer told me.

I have a six pack... of beer. Thats about it

well, not me, that's for sure ;-)