After taking self-assessment questionnaires to help set goals, readers engage in entertaining and instructive games, exercises and puzzles that help stretch and strengthen the mind, test its fitness and explore its potential.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.