A 13-time Gold Glove winner, National League shortstop Ozzie Smith invokes Yogi Berra's maxim ''90 percent of baseball is half mental'' and then demonstrates it in Let's Play Baseball, a well-organized practice-and-review video. Smith's informative 50-minute lesson covers all the bases: pitching, batting, running, and fielding. And it serves softball veterans as well as Little League rookies, as Smith covers sophisticated strategic subtleties that even adults may not know. His most useful advice: "Get out of the house and play. Don't just watch TV." A

