Welcome to the board.
First thing to do, is to take action, now your probably saying to yourself, how do I take action if I don't know what to do?
1. Read all on the board, there is lots to learn, first thing you should find out about is proper nutrition, and start making small changes.
2. Start walking! Walking is a simple and easy way to start the fat burning process. Start with 1/2 every single day!
3. Find out about weight training, this will be important to burning the fat off and keeping it off, very important.
Well, there is 3 things you can start doing right now, to take action, and start losing weight.
Good Luck!