Welcome to the site! NEVER too old to learn, NEVER too young to learn.
In general, i would begin with a finger exercise or two that you do every day (Hanon #1 is a good one). Begin with hands separate slowly, then try to put them together, ultimately picking up the tempo. The more consistently you do that, you will feel your fingers getting stronger, quicker, and having more endurance and precision.
Then pick a key that is your favorite (most beginners pick "C", plus the Hanon's are in "C", so its a convenient place to start), and then learn the scale & correct fingering. Practice that daily as well.
After about 5 min of Hanon and 5 min of scales, your fingers will probably be sore. But the more frequently you do them each day, the stronger your fingers will get, and you can do them for longer durations of time.
Lastly, find a few YouTube songs THAT YOU LIKE, in the key that you are practicing the scale in, and then try to learn them from watching. (I have a list of songs categorized by their keys, so if you get stuck here, let me know).
Thats probably the fastest way I would recommend to get going.....