Read several pages at a time, then go back and outline what you have read. Be sure to include new terms relevant to the subject matter. As with underlining, be selective. When you finish reading a section or chapter, write a short summary. Be sure you include all main points.
Summaries are useful in reviewing, when main ideas are more important than supporting details.
If you have accomplished all of the things above, you will probably find that reviews are easily and quickly accomplished. Skim over chapter headings, trying to summarize as you go. If you have kept written summaries, review them and try to expand on the information they contain. Space review periods over several days or weeks. Your first review should be within 24 hours of your first reading.