I MAY be the LAST student taking the LAST KC instructional class from Dr. Walt. That happened back in Dec 2017 at his place in W. Orange, NJ. (right in your neck of the woods) I consider myself to be among the lucky ones to have met with the master and sat at his knee for instruction.
Dr. Walt has written MANY books on the subject of using KeyCreator and his writings are, in my estimation, top drawer. But my visit back in 2017 gave me the impression that he was finished with the KeyCreator instruction/book publishing business, having just finished 'Doctor Walt's KeyCreator Desk Reference', a 296 pg. Perfect Bound version of his "Greatest Hits, as it were.
It MAY be possible to coax him out of retirement but I cannot speak for him. In the alternative, he is the author, creator, and producer of the several hundred tutorials listed in KubotekUniversity. These are static as well as video renditions of the various subject matter as found in his many publications. They are short (no more than 4-5 minutes long) videos that use the time honored military approach to training, "tell 'em what you are gonna tell 'em, tell 'em, then tell 'em what you told 'em." I have all of them ensconced on my iMac and they are just like having him in the room with you-including a few snarky jokes.
I tried to download one tonight just to see if they would still work but Kubotek seems to have them in a different file format and the download takes forever with the 'converting' function needing to run. Contact me at my eMail dubledeuce@earthlink.net and I might be able to help.