He does follow the textbook most of the time. But sometimes he tries to deviate from what's on the textbook and teaches it in his own way. Exams are based on mostly the homework questions assigned. Yes, you may be able to study them and do well in exams. But final is cumulative so it's nearly impossible to know nearly 100 questions. Very irresponsible. He spent 1 lesson on last 3 chapters, only presenting the basic equation and theory without going into details. I ended up self-studying for it. Not much extra hours offered even before finals week. Be prepared to study on your own time a lot if you are to take him.