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To walk around you can press the arrow keys or W,A,S,D. To jump just press space. You can also move around by left clicking on the ground. This is a Click to Walk setting. You can turn this off in our Settings menu.
To fly first press F key. This will hover your avatar, then use the arrow keys to or W,A,S,D. Press E key to fly higher or C to fly lower. You can also use Pg Up and Pg Down keys to fly higher or lower. Press the F key again to land.
You can change your camera angle by holding the right mouse button and moving your mouse. You can also Alt+Right Mouse button to focus on a certain place. The mouse scroll wheel will zoom the camera in and out. The F4 button on your keyboard will enable Fly Cam. You can use the A and D keys to pan from side, and use the W and S keys to zoom in and out. If you want to rotate the camera, hold the right mouse button and move the mouse.