That is great you are taking those first steps to get healthy! Carbs are my worst problem as well, after I quit my coke habit!! That is coca cola! I consider myself a recoverying coke addict!! LOL!! I have not had one since Dec 31. I know from past experience if I have one, it will lead to two, and so on, until I am right back at it....so I did the cold turkey quit! It was hard, but not has hard as I had expected.
Before you go out and spend money on any home exercise equipment, which you may or may not end up liking, why don't you start with walking? Walking is the best way to start a program, you can build up both speed and distance as you get more conditioned, and it is free!!!