I'm not either, thats why I went somewhere and had to put up with crap from an installer and pay for it to be done. See if you can find someone in the area willing to help and teach you how to do it.
Take it to someone. Don't go to CC because the do some pretty ugly hatchet jobs. Find a good installer to do it for you. I have an 04 and I had the deck put in the spot below the factoury HU and it looks pretty nice.
i have a 03 accord and put my headunit under the stock headunt. yesh i have 2 cd players, but the stock does not work. it powers up, but there no sound coming out of it.