Spark plug remover should be part of your toolkit in your boot...
It's the long hexagonal shape thing. you have to use the wheel nut wrench over the top.

There will be a rubber bit on the inside of the hex thing for the end that goes over the sparkplug.

Spark plug installation is the easy part. Pulling off all the junk around to get to them is the fun/ time consuming part.

Cheers,
Fred