If you have enough time and money you can start going to fitness club in your area.IF not you can start be fit at your home! Yes you dont need to spend a dime to be fit.All tools are around you.First of all when you are really fast dont force your body to run or do hard exercise couse you will damage your hard fast.You can check your new loss weight training from small walking at the morning (right before work) or at night (before sleep).Its very importent to dont eat when you will back! yes you will become very hungry when you gonne back from your walk but you have to be hard and dont eat! dont worry nothing will happend you will just burn some of your fat! and thats very very good right?
Your walk dont need to be long 20min for start will be great! you will exrend it day by day dont worry.Maybe some day you will start jogging.But dont force it! little steps will take you there too!