Here is a great extract about studying effectively...

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Many students are surprised at the differences in studying for college courses versus how they studied in high school. Regular worksheets are replaced by vast midterms and exams which require knowledge about concepts rather than simple memorization of facts. Students frequently discover they need to adapt their study habits to the college setting. Here are some tips for getting started:

• Study in chunks: 20-50 minute time periods followed by a brief break (5-10 minutes) is the most effective way to study
• Use daylight hours: an hour of studying during the day is worth two at night! Do the work that requires the most concentration (typically reading) earliest in the day.
• Rank your three classes and be sure to spend time on your most challenging class everyday and early in the day.
• Study actively: ask yourself questions, review your notes regularly, discuss key concepts with peers and course professor