Spacebar or click to mine. This will get you Affogats, the currency of the game. Using the Affogats, you can buy things from the shop (the bar on the right). Use the mousepad or arrow keys to scroll the shop to see everything. Buying stuff can increase your APS (Affogats per second). Basically the amount of APS you have changes the amount of Affogats you get per second, (your income).
