Learning strategies have been identified as the method that good language learners use to successfully learn a language. Each learner has a set repertoire of strategies that they use despite the learning context. Adults and young adults transfer learning strategies from their previous learning contexts to language learning. But to what extent will such strategies help them attain success in language learning? This book offers a view of three interesting aspects of strategy use. The first one is the transfer of general learning strategies to language learning. The second is the effect that such strategies have in language achievement. The third aspect explores the teaching of strategies, the adoption and inclusion of such strategies in the learners' repertoire and their effect on language achievement.