The red dot in the middle of the screen acts like a pointer; if hyperlinks are activated (click "o" key to toggle hyperlinks on and off), clicking on an object with the left mouse button while pointing at it will open a hyperlink.
Press left, right, up, down arrow keys on keyboard to MOVE left, right, forward or backward
Move mouse left, right, forward, backward to LOOK left, right, up or down
If you cannot look far enough in one direction, double-click the LEFT mouse button while the cursor is in the VR area.