make sure you take pictures, and post them via your .nac account so I can see them!!
learning all this new stuff keeps our minds acitve, and I know that is important for old farts like us!!
As far as servicing an Imac, NO, all you can do is add memory; the rest has to be done by pros...
We bought service plans for my Mac Pro, and the Imac, but not for the laptop..
You should probably get a Mac Pro, as it is TOTALLY serviceable by you or me, and its so easy to replace stuff, or add stuff, you wouldnt even believe it..
It took about 20 seconds to add a Terrabyte Hard drive to the thing, and there was NO CONFIGURATION WHATSOEVER...I Turned on the machine, and it was there, and recognized...no screws, no rails, it just slid in and clicked, and that was it..
memory is even easier..
I can't believe I didnt do this years ago...