If you want to have a delightful experience of skating, you just need to practice as much as possible. For this purpose, you can use any rink. Rollers are convenient because you do not need to buy skates, you can always hire them.
Learn how to transfer your weight from one foot to the other, and in time to flex your feet before you go out on the ice. Put your hands behind your back and press them tightly to the body, knees and feet together. It will lessen the chances of falling.
To learn how to slow down, bend your knees and slightly bend your body forward. Your feet should be at a distance of 45 cm from each other. Try to tilt the body forward when you want to increase the momentum. Try to slide on the ice but do not try to run.
The basic elements of skating are all the arcs. To perform a forward arc on the outer edge, it is necessary to put your feet in the forward position and transfer your body weight on the forward leg. Next you need to move the center of mass in the direction of motion of the arc and deploy the shoulder belt in the direction of the bending arc.