Ernesto Macaro 
Learning Strategies in Foreign and Second Language Classrooms [PDF ebook] 
The Role of Learner Strategies

An extremely lucid book that mixes discursive prose with exercises, questions and prompts for reflection. Each theoretical point is supported by a fully explained example. The book focuses on the different strategies that people use to learn languages and shows teacher how to (a) train pupils in those strategies and (b) adapt their teaching to derive the greatest benefit from each strategy.