today my uncle is going to show me how to ride a scooter but i just need help with braking.when braking and stopping first you must gradually let the accelerator slow down and then squeeze the rear brake slowly or do you pull on both.also one time a friend of mine was going at a kinda highspeed on a scooter and he tried braking with the front brake but forgot to release the accelerator and ended up fliiping the scooter and scraping his leg was this because he didnt release the accelerator at first or because he used the front brakes.thanks