Elaine, I had almost 4 years of piano lessons in grade school. Now if I had only PRACTICED during those 4 years....
I am self taught on guitar but I only can play chords. Having the piano background really helped me. The other thing that helped was making friends with lots of people who played, and generally making a pest of myself as I got them to show me how!

I spent the last 3 years of high school really working hard to learn. Other than "maternity leaves" I have spent the last 25 years of my life playing guitar at church.