That's awesome!
As for exercise, find something you like to do - like walking - and set little challenges for yourself. Like, today I will walk this many steps, or today I will walk to this marker, tomorrow I will walk to the next marker (like a mailbox, street sign, etc. depending on your starting level).
If you have a gym membership, that is a great place to try new things. If you don't, but if you have a library in your area, they often have exercise DVDs that you can check out and try.