WASD to move
hold right click and move mouse to look around
keep your characters alive
hold space to move faster(don't do this in the tutorial, if your "next page" button is selected when you press space it will go to the next page)
Just un-zip the contents of the .zip file, place them into a new folder that you create called something like "Ruler of Survival", go into your new folder, and double-click the .exe file.