Walk around the experience by using the Arrow keys.
Alternatively, you can use the W (forward), A (left), S (back), and D (right) keys.
To inspect and put back objects, left mouse click.
To pick up objects, first inspect, then hit the F key.
To see the in game menu, hit the U key.
Depending on your computer, you can adjust the graphics settings by going to settings in either the main menu or in game menu.