The great thing about learning to play new instruments is that you’re never too old. The only two things you need to play are patience and a willingness to practice. That’s it. If you have those two things, everything else will fall into place.
There is a bit of a lower age limit. Children can start music lessons around 4 or 5 years old, but for some instruments, they may want to be older. For example, kids should be 7 or 8 years old to learn guitar, as their hands may not be large enough to reach frets or wrap around the guitar neck.