What do you click in the shop screen in learn 2 fly?

In the shop screen of "Learn to Fly," you can click on various categories to purchase upgrades for your penguin, such as new equipment, upgrades for your flying skills, and aesthetic enhancements. You can choose items like rockets, gliders, and other tools to improve your performance in the game. Additionally, you can view your current funds and how much each upgrade costs before making a purchase.