First, there's a heel brake that you can perform if your skate is equipped with one. Bend your knees, extend your arms in front to counterbalance, push the skate with a brake forward and lift your toe.
Secondly, there’s a T-stop. To perform that one, you’ll need to push one skate forward, leaving the other leg straight down in a perpendicular manner, not allowing your ankle or knees to bend. Your foot will slide back to you as you slow down and you’ll end up in a T-position.
Finally, there is a plow stop. Spread your legs slightly while skating and pull your toes together until they meet.