check engine light, cutting out. codes PO304 & PO354 primary ignition coil D

Thank you!! Not sure of firing order but think cylinder 4 is if I'm standing facing the hood I see 3 coils in front which is actually the side, and number 4 would be in the center?? How do I clear check engine light or will it go off by itself once I replace coil and plug? Do I determine left side, right side from sitting in the car or standing in front? Facing the car I see belts to the left side, which would be the front of my engine. I'm used to Old School Chevy, not front wheel drive. Again Thank You!!!! I asked on a few sites and you are the only one to reply!!!!