I'm making this guide to avoid so many questions which has been asked over and over again and help people starting out.
Left click - move, pick up an item or use an item in your hands
Right click - drop and item to the ground or storage.
W A S D - camera movement
I - inventory
E - buildings menu
SPACE - Whissle for bots
Start is always the same, pick up a nearest Stick and Stone, little popup will appear and click to craft yourself a Crude Axe
Stick - craft material, lying around