I myself am trying to get back into running after being super inactive over the past year or so. This podcast, “Running Slow with Susan Lacke” might be of interest and good place to start as well, especially if you’re learning how to pace yourself and build endurance along the way.
I’ve been perusing the Uncommon Path area a lot lately too as it offers some great tips & tricks and inspirational stories that might help.
Cheering you on and make sure to update all of us on your progress, too!
Depending on where you are in your journey back you might take a look at the Couch to 5K, Couch to 10K, etc. plans. They help you build back slowly so you don't get injured. I have used it or something similar a few times when coming back from breaks in my running (injury, surgery, etc.) and they are free. You can skip out in the plan to wherever you are in your fitness level.
A rule of thumb that I was giveen some time ago and that has served me well in prepping for marathons and in recovery from cardiac surgery is to increase your weekly mileage by no more than 10% a week...