Help with engine adjustment* please *

Hi I need snow help, please. Have an Audi 80 B4 Bj 89 My engine is not running at all. How can I get it myself? I’m particularly interested in the valves. How can I get them back in phase with cylinder and ignition. There are make-ups, but they have to come into effect with the cylinder. Which one is actually the first cylinder? The one at the front or the rear?