Well, first off... WELCOME!
Secondly, if you are starting a new exercise program, especially if you have a pre-existing condition, I'd whole heartedly recommend you consult with a physician.
Given that yours is a foot-related injury/repair... I'd (personally) want top make sure a medical professional thought it was OK... I mean, you kind need feet to walk, right?
If you aren't in the habit of excercising regularly, or at all, I'd start with walking (briskly mind you) for 10-minutes Morning and Evening. Also, cut crappy fluids that are loaded with sugars and chemicals, and stick to fluids as found in nature (water, coconut water, juices, etc). These two alone will make a TON (sorry for the pun... and the rhyme) of difference over the Summer months ahead!
By Fall... you'll be a Stud... or a Hottie... whichever you subscribe to!
Best of luck... and train like you fight!
{salute}