The plugs are inset into the intake on the inside of the valve covers, you will need sockets (deep) and eleta greese as well as ainti lock.
Goto your local auto parts store and buy the book on your truck, it's so much easyer then me trying to explane without pics.
I seen your question, you need to take off the air cleaner, and work you way in, the best is a swivle head on the end of a 5" extention.
Good luck