Bob M. is a for-real math teacher and treats the subject as such. Which means picky about details. The two comments above are accurate so I'll add some hints.

to get an A or B: 1) Know definitions and theorems (they are short). 1a) Practice the examples and medium hard home work. They show up on quizs and exams. 1b)memorize some equations:i.e. distance b/w lines 2) don't make dumb arithmitic mistakes . 3) keep calculator handy for fractions and multiplication 3a) convert final answers to fractions for first Mid Term material. 4) know how to multiply matrices & restrictions on order of multiplication of two terms and other algebraic laws. 5) Expect some straight forward row reduction problems. And at least one tricky problem or two. Always start with some definitions that you know. He will keep the trick just close to something from the HW or lecture.He will choose harder examples of verification type problems.