If you can I'd recommend getting piano teacher and live lessons. I got one and improvement in posture was a biggest gain I got. That and some cultural push (e.g. there's no wrong music, only the music someone doesn't like, or put piano next to window to learn to not watch on own hands).
I’ve thought quite a bit about getting a teacher, but have hesitated for a few [somewhat legitimate] reasons. Among them, I’m partially disabled and can’t practice consistently. However, having a teacher berate me about my posture would actually probably help that at least a little bit, now that you mention in :-) Thanks for taking the time to share your experience and encouragement with me! Best of luck on your lessons as well.
