I have a fair collection of documentation, including the excellent Frances S articles.
My 3000 I bought new off of ebay from a shop in Portugal, about 6 years ago.
I guessed that it would be a low volume enough item that it would be multi-voltage capable, and it was. Two jumpers to re solder, and a new plug and now it talks with NA 120V ac quite happily.
I have a standard neg - an image of my wife in the front yard on an overcast winter day holding a grey card in one hand, and a colour test target from an old darkroom dataguide in the other hand.
I use it to print the first sheet of every box or roll of RA-4 paper I open. Once I get a neutral grey print, of the right density, I autoreprogram the master settngs. I then make note of the the master settings and write it on tape that gets affixed to the front of the package.
This habbit saves a lot of time for me. Swap paper, resett eh masters to the settings noted on the paper pack, and the next step is to set the channel to what I want to meter ( I have channels set for spot grey, spot neutral caucasian skin, warm tone (ie tanned ) skin, then three more for semi integating sisk the same way, and then channel 7 I task for random use, with a table of figures written on a card on the wall for settings for thinks like green grass, blue sky, puffy white clouds, asphalt, etc. I keep chanel 8 for when I do b&w work, and only use that chanel so I don't screw up more standard setting on the other 7 channels.
I freqeuently contact print on old slightly fogged glossy paper, and then shift to lustre surface papers for final prints. Change the master, set the channel for the metered subject, and bang out a perfect print nearly all of the time unles the chemistry has aged from when I calibrated it. You can do a NG test and autoreporgram really quickly though.