I’ve never been a runner, but I’d like to become one. Where do I begin?

I am so glad you asked!! I love running, not because of competition but because I can get lost in my thoughts and, this sounds stupid, meditate. So what ever the reason you want to get in the running scene it is a great reason in my opinion.
Step 1) get a nice pair of running shoes. You’ll want to go to a running store or shoe specialty store. Tell them what you want to use the shoes for, any foot pains, aches, or problems you have. They will assess your arch type and even bring in an old pair of tennis shoes so the see the wear pattern. If the shoes store is too expensive kindly thank them for the info and let them know your going to think it over, then by the shoes on line cheaper. Note: running shoe size can be a shoe size larger than your normal shoe size due to the spreading of the toes on impact during a run.
Step 2) Run. Find a place you want to run and run. Keep your pace at what is called conversational pace, meaning you can keep a 1-2 sentence conversation/ sing a line or two of the Brady Bunch song. If you can’t keep a pace for very long run for x minutes then walk for less than x minutes. Gradually change walking in to running over time and soon you’ll be running all the way around the track.
That’s how you get started, remember keep a spirit of fun with the running. Finally from a runner of 10 years plus, not all runs are good runs but when you have a good run, man is it good. Good luck and contact me if you have any more questions.