Congrats on getting back into it! It's probably going to feel like you're running for the first time all over again, but I'm sure it won't take long for your muscles to remember what they're supposed to be doing!
I wonder if you have any journeys which you currently drive/take pubic transport and could replace these with walking as a way to start dropping the weight, and later to run these routes from time to time?
Do you have a smartphone? I know some people who've followed the Couch to 5k app with great results.
I do a daily vlog (www.youtube.com/user/craigbee) and upload my running habits (training for 3 marathons in March) - why not keep a diary of some sort (paper/video/other) logging all your walks/jogs and let that motivate you once you see how you're improving?