Would like to replace spark plugs in Cayman S
 

I see there are a few parts besides spark plugs that look like I may need as part of the process. Does anyone know the full list of parts I will need?

Are there any gotchas for this?

I don't know what else you would need, unless you plan on replacing/breaking a coil or two? Of course you do need all the right tools, torque wrench, 5mm hex socket, extensions, etc, etc. Some folks say to use anti seize paste on the plug threads, while others say not to, I'm sure you'll get a host of opinions on that issue. But in general, all you need are the plugs.:D