Running Newbie...Help.

Start slowly. Doing too much too soon will get you injured. Couch to 5k is a very popular program to start people running. It works. It starts with three days a week, 30 minutes each. It mixes running with walking, gradually increasing the running segments until you are running continuously for either 30 minutes or 5 km./3 miles.
When you run, run slowly. Very slowly. You should be able to chat with a friend while you run. Don't worry about your pace. A lot of people feel they can walk faster than they can run. That's fine. Your speed will come with more miles.

Hello (incoming brain dump, apologies if it is stuff you already know!)

I started running last August. I love it. Things I picked up? Get some nice shoes, get them fitted to your feet and walking/run gait (then track the mileage and replace them at the appropriate time). Keep warm. Go slower than you think you should. I damaged myself going full pelt and had to take time off. Just chill and enjoy it, speed and distance will come in time. I found with me, it is either speed OR distance, not both. But I'm an old fart, so there you go!

If you run, you'll find there are times you get crazy hungry. Drink loads and have a feed, but try not to eat back all the numbers MFP says your burnt as they might be a bit off. And don't drink the calories (I will contradict that in a moment!).

You'll work out what food works with you before and after running. Like, I can't run after eating bananas. Great for cycling, but they reflux with all that bouncing around and it's horrible. Your diet might change a bit here and there to accommodate the extra effort your making (like more potatoes, but less cheese because the spuds might feel better for you post-run. YMMV).

Bits of you will ache that you never imagined or realised. Like your forearms.

Music is great to listen to while running, but try podcasts and spoken-word stuff instead if you need audio. You might find that music dictates your pace and effort. This leads you to wearing yourself out quicker than if you'd let your body set its own pace.

If you find yourself on a long run, you might need to carry fuel with you. That could be a gel or a sports drink (drinking calories....). But you won't really need to worry about that kind of thing if you're running less than an hour at a time (google around on that, there's loads of info).

STRETCH. Really. Learn those stretches if you don't know them already (the "sports medicine doctor" comment says you probably know more about this than I do!). For example, I would run and get lower back pain. Weird. But I stretch out my glutes and it eases the pain away. Stuff's all weirdly interconnected, but you know that already I expect. Oh, and avoid really long strides. Lots of little ones. Google around for that too. But you'll find what works for you and is most comfortable.

And mix it up. Use music sometimes, run up hills, do short runs, do longer runs, do fast bits and then slower paced bits, stop yourself getting too bored. Enjoy it. Like everyone has said, take it easy. Oh! One last thing, if you have a phone to take with you, use Strava or something so you can automatically link it up to MFP. I wouldn't worry about spending money on GPSs and Garmins, but a smartphone with Strava and MFP is quite useful for tracking times, distances, efforts, calories and all that other stuff.