Surprisingly few people take any time to think about how they are learning languages. They usually just trust their teacher or friends' advice. This is inefficient at best and often liable to failure at worst.
Language learning and learning in general have been over-complicated by a mass of theories, methods, and techniques. This makes life harder than it needs to be. This book attempts to cut through the noise and give a clear description of how languages are actually learned. This knowledge of how languages are learned is not domain specific and can be applied to any future learning as well.