If they're that hard to get off, wear gloves or you'll get a busted knuckle. And the first time I changed the plugs in my car, I didn't know what I was doing and rocking the engine forward really helped me figure it out. Take out those dog bone bolts and push the car forward and step on the e-brake to hold it there. Not necessary but a help for the first time.
Last tune-up I did, I put on some MSD wires with nice little plastic numbered rings on them so you know which wire goes where on the coil pack. From the top down, its 6,3,2,5,4,1. For the cylinder numbers, from the left to right in the front, its 1,3,5 and rear(by the windshield) left to right, its 2,4,6.