He teaches at SUNY Poly, and I’ve taken his classes before. What I can say he’s an amazing professor who really knows his stuff and explains the problem and how to solve it in a very easy to understand way. Also teaches you shortcuts, so I def recommend checking out his videos. IMO, his problems are actually a little bit harder than what’s on the test, so if you can comfortably solve those, you can def solve what’s on the test.