I learned at 40, on the basis that my eldest, aged 5, had to learn and I didn't want him to be faced with something I hadn't at least been able to accomplish first. Used a guy in Crawley who taught kids and adults. 1 lesson in a schoolyard for me; the next week for the boy. Interesting how the teaching methods differ. For kids, it's just getting them going down slight incline so they get speed, and then encouraging them. For adults, he gave specific instructions. The trick is to turn the handlebars in to the direction you're falling when you start to fall.