Write down keywords from each section, and a small sentence in your own words summarizing the key word. Then grab a partner and have them help you memorize (in your own words, not verbatim to the sentence under the key word) a small summary of each key word. Doin this in your own way instea of memorizing EVERYTHING and just the key words will help you remember a lot more information on each subject while doing less work. This method was given to me by my Psych teacher and helped me out a lot, I went from a B average in my Advanced calc and physics classes to a near perfect score, i only had problems remembering to do the home assignments after that.