I began learning piano at age 27. Piano fingering technique is very important. That's not just which finger hits which key, but also the posture of your finger

I began learning piano at age 27. Piano fingering technique is very important. That's not just which finger hits which key, but also the posture of your finger. That could be what's straining your fingers and giving you trouble reaching keys. I found a local piano teacher and took weekly lessons. The piano teacher caught these bad habits like finger technique, but also how hard to hit the keys and other things that I wouldn't have noticed on my own. If you are set on self-learning, getting a few lessons every once in a while will help you stay on track.