You already have guitars, why not enjoy them? I gave my kids guitar lessons. They worked from a beginning book by Hal Leonard. They were told to practice just 15 minutes a day between weekly lessons. You can teach this to yourself. You can also find videos on YouTube for free to help you.

Once you get past the beginning stages and learn to read music and play, you'll probably find playing guitar very relaxing and enjoyable.

My son picks up his guitar the minute he comes home and watches TV while playing by ear the music he hears on the TV!

My other son is in a top music university for jazz bass/music engineering.

There's no telling where the skill can take you.

P.s. Go to a music store to find someone to tune your guitar strings.