Its real simple. Do one at a time. Unclip connector. Remove the fastener holding the C.O.P ( coil over plug ) pull the coil and boot out. Unscrew the spark plug. Make sure the new plugs are gapped correctly. For stock iginitions .054 I believe. Re-install new plugs. Some people use a small piece of hose to install the new plugs this way you cant really cross-thread the spark plugs back in. then finish em off with the ratchet. Pretty easy huh?
Forget whatever else you see disconnected in the pic. You shouldn't need to remove anything else as I remember. I haven't ever just changed the plugs so I'm not for sure.