To enter pointer lock. Pres and hold W,A,S or D and dbl click on the engine view.
Press Esc to exit pointer lock.
Press E to open "Asset Store", Double click to add to inventory. Or drag to scene
Drag to scene to add an item
Right click to remove an item.
Drag material from inventory to item to apply material
Use arrows up and down to change values, Press shift to change with bigger steps
Press 1 to select cursor tool, Press 2 to select place tool
Cursor tool: Select items in scene
Place tool: Place items in scene
In place mode press Option/Alt or mouse wheel to select item to build with.