Do all the reading assignments prior to class. Take reading notes outlining the major points and jot down questions or comments. Even though some faculty may not follow the text in class, all expect you to know what the text contains. Concentrate on the classroom activities during class time. Focus your attention and be aware of the speaker's emotion, body language, and key words.
Lecture notes can be effective study aids.
To take notes well, you must be able to select the main points being made and express them in your own words or at least condense the lecturer's words to ensure a better understanding of what's been said. Check over your lecture notes soon after class while they're still fresh in your mind. One hour of study immediately after class is more effective than two hours of study a few days later.