When you first arrive, you’ll see levels with a star and a number on the wall. You want to go in a level with 0 on the label. Unless you have more stars shown on the top of your avatar. Once you’re in, equip your starter wings in your inventory. If you can’t get up the mountain in the level, ask for help. If you beat the level, you’ll get money and a star(s). You can buy more wings with money.