It helps to take full notes. what I mean by that is you should write down everything but try and put it in your own words unless you comprehend everything said. now Im not saying go to the lesson and write every little word down letter by letter. but it doesn't hurt to write down most of the information. Especially the important parts. Pay very close attention to the lessons and what they are trying to teach you. if you must write down the entire lesson then have a highlighter and high lite the different pieces you need to answer questions from your work sheets. Chances are you will see them later on tests and maybe finals.