On the PC, the controls are relatively easy. You use the keys WASD. W is forward, A is left, S is backwards, and D is right. You press keys 1-9 to change your hotbar slots (use scroll wheel if you have a mouse). Press E to open your inventory. Left click to select an item and move it. Left click again to deselect it. To attack, left click on a mob. To interact with a block, right click. To shoot a bow and arrow or trident, left click. To break a block, left click on the block or hold if you’re mining it. To fly, double press the space bar.