THE STUDY SMART SERIES, designed for students from junior high school through lifelong learning programs, teaches skills for research and note-taking, provides exercises to improve grammar, and reveals secrets for putting these skills together in great essays.    Some students are not getting the grades they want, and others spend too much time working for good grades. Any student can find useful advice in Study Smarts: How to Learn More in Less Time. Study Smarts is the most complete and lively guide to streamlined studying. In a highly readable style, the authors eliminate the confusion and anxiety often felt about keeping up with course work.    Each chapter explains a different technique, and each chapter title is a nugget of advice that summarizes that technique. For example, “Eliminate interference from your environment;” or “Never study anything the same way twice.”    The writers explain how to set goals, take notes, review, cut reading time, make the most of class discussions, etc., all as efficiently as possible. Beyond refining basic study chores, there are novel tips for time management and cramming and special memory techniques. The authors also tell how to get outside help for special problems.