I'm a keyboard player, took piano and organ lessons as a kid, started playing bass guitar in the 1980's...mainly because back then there were tons of keyboard players and bass players were in high demand. With this background, one thing I always wanted to do was to learn and play guitar, and started in my early 40's.
One suggestion that I would like to offer is to find a friend or two to play with. I'm not necessarily talking about joining a band, but rather just someone to play along with. It doesn't even matter their playing skills. You will find more enjoyment and you'll find that you will progress much faster than learning or playing by yourself. And, you'll look forward to future jam sessions.
Second thing to remember is to have fun. Don't get frustrated. Enjoy the little accomplishments as you progress.
Good luck...and go play!
Best,
Brian
