Mouse
Left button selects a unit and gives orders: click a target to attack, click the ground to walk. Right button clears the selection, as in the original.
Camera
Push the screen edge or use the arrow keys. The minimap in the corner jumps the view.
Panel
Select a building to see what it can produce; a click queues a unit, a right click takes one out of the queue. The five toggles under a unit decide which stats it trains.
Multiplayer
The Multiplayer button opens the room list. Create a room, take a colour and a tribe, add computer opponents or wait for people. Observers can watch with or without fog.