First of all, he is an amazing teacher. I had him for the linear algerbra. He did not have a formal office hour, but you can email him to make an appointment. He does not like to post the slides, you have to take note from the borad, but you can ask him to do it. He perfers to use the board to teach. He is very very knowledgable. The in class tests are very esay, he will go you a example test one week before. The final will be harder but it is acceptable

I would advise to study the material before coming to the course. In class exams are preety easy but the final is definitely hard. Very knowledgeable teacher but has difficulty explaining the concepts. Yes, he does make a lot of mistakes in his calculations and you would definitely want to check your work and his. He is very open to any questions you have outside of class and will answer with a good explanation. He doesn't have office hours but he is frequently at school most of the week.