Glad you got value out of my courses. I was the guy teaching those classes, and Derek was hosting the website. We officially shut down about a year ago, but I've rehosted many of my old class videos on YouTube for free. There is a link in my signature...

"Foundations of Mechanical Accuracy", by Wayne R. Moore. Gives you the history of measurement, and how the Moore Company built the most accurate machines in the world, from 1940-1975. Their Jig Bore and Jig Mill machines are still sought-after, for machining parts to millionths of an inch accuracy. There are lots of pictures, and the story that Wayne weaves into the pages is quite compelling. (At least, it was for me.) If you want to grow your knowledge of how to measure and make precision parts; this is the book to do it. "CNC Programming using Fanuc Macro B", by S.K. Sinha. Another book that gives you great insight into how any Fanuc-controlled machine functions "under the hood", and shows you how to become a true master of writing NC Code in your programs. Each book, is worth far more than its own weight in gold. The information contained in each one is priceless. However, it only becomes so if you actually learn what they are teaching. That motivation has to come from you. If you want your work-life to get better, and to earn a higher salary; then you've got to invest in your own education. It won't all be fun. It won't all be enjoyable, but the harder you push yourself to learn; the bigger the rewards you will reap in life.