Yet another guy who came back to photography. Had a few film cameras in my youth, went digital some years back, have been fortunate to get to shoot for work sometimes: mainly park construction projects, so, essentially landscapes, w/some people.
I got back in the groove when a couple headshot sessions I did just plain sucked. The photos weren't terrible, but I had no lighting control and no idea how to work with and pose my subjects--my lack of experience made my subjects as nervous as I was.
So I dove into off-camera flash. It's a good mix of technical and creative, and it forced me to learn how to pose people and work with them to get a genuine expression. I have zero fear of artificial lighting or shooting portraits now.
I'm no pro, but I can usually get a good portrait in 10 minutes or less. (Some people take longer--they are genuinely anxious in front of the camera. BTW, I already know my subjects, which helps the 5-10 minute sessions go faster.)
I bought a bunch of Godox (Flashpoint) and Glow gear from Adorama. It's pretty inexpensive and lots of people use it, so getting help is easy.
If anyone is interested, check out The Strobist--prolly the best intro to artificial lighting on the web.
Also, the Sharpen channel on YouTube, but filter by popularity and focus on Rob Hall's videos.
Search YouTube for Peter Hurley. He's not everyone's cup of tea, but he understands that expression is EVERYTHING.
Neil van Niekirk's blog
DP Review's lighting forum, which has a bunch of pros on it who are helpful, and patient with newbs.