Use A and D to steer, or carve, as it is referred to in this profession, which means that you will use the keys to take turns between the rocks, trees, and other types of obstacles because the longer you descend downhill on the slopes, the higher your score becomes, and you should also collect coins along the way to help you. Various skills can also surface as power-ups, which you should absolutely pick up to see what they do. To use simple boosts, press the spacebar.