Move: WASD or ↑, ↓, →, ←

Water: Q

Dig: E

Plant: Left Click on wet soil

Harvest: C

Inventory: I. While Inventory is open, press alt and right click allow you to move the items to item bar at bottom.

When approach to bed, left click to sleep.

When approach an NPC, left click to interact with the NPC, the NPC supports trading with you.