I’ve done various couch to 5k routines and my favourite is GetRunning, it works well with my own music on my iPhone.
I first tried in about 2014, just before I was 60. I always found I’d get to Week 3 and start getting trouble with my knees. Subsequently I’ve repeated Weeks 1 and 2, twice or three times, before ramping up to Week 3, so there’s a really good foundation.
I did the 5k Race For Life after a few months, ran the whole way in 29 minutes. I carried on extending my distances with a run 10k app, and did actually manage to run 10k in 62 minutes, without breaking to walk!
I run on roads and pavements as I slip more easily on grass, and I dislike bumpy, uneven going. Good socks are as vital as good running shoes - I had gait analysis done at a local sports shop.
I lost three stone that year.