how to do a backflip?
Just practice every day and you will be able to do it easyily....most people take a while to get it right but anyone can do it.
Tuck in your knees, jump backwards, pulling your legs over your head and landing on your feet (preferably).
Yup YouTube it for best chance
It's easiest to practice underwater first like in a pool
Practice try it on a trampoline first