Can any body tell me the seven countries where the scout is not excisting?

Hey, I’m nearly 17 and have recently been really interested in learning Gymnastics again, i used to take part regulary and was able to do some skills like walk overs and back flips but nothing major. I would consider myself to still be reasonably flexible in the idea that i can still perform all basic skills and can practically do splits but i am very interested in participating again, am i too old to learn to perform at a decent level? Also im struggling with planning some form of training plan to increase flexibilty mainly but also strength, i understand that a coach is needed to learn basic skills but if you could help me devise some form of plan or schedule that i can do do possibly once or twice a day to help me improve that would be extremely helpful, thank you