This is a pretty straight forward job though I cant recall if you need to do anything special to reach some of the plugs.
You may need a tool to pull the boot off of the plugs. Now is a good time to go ahead and change the plug wires. If the plug wires stick to the plugs hard enough they could break during removal.
You will need various length of extensions and a special socket for the plugs to help prevent breaking them. Experienced mechanics often do it with a regular deep socket but better safe then sorry.
unplug the wires from the spark plugs makeing sure to keep them in a logical order because they have to go back in the same spot they came out from. If you are worried about messing up here then just do one at a time.
Unhook the spark plug wire from the plug. remove the plug. check the gap(these days I notice that most of the new plugs are already gapped to the right spec. but it doesnt hurt to double check) on the new plug. Carefully thread the new plug in and tighten it up. plug the spark plug wire onto the new plug. Move to the next plug, rinse and repeat.
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