Fluent Forever
In this fantastic book, author Gabriel Wyner shares the very methods he used to learn and become fluent in more than 6 different languages by the time he was 30. This is a must read for those wishing to learn a new language, and a great read for anyone wanting to learn effective techniques for learning anything and actually remembering it forever. Gabriel introduces you to technique of recalling information and leveraging spaced repetition with the free and open-source software Anki. This book will give you the confidence and inspiration to start learning a new language, knowing that by following Gabriel's method you will be successful and have fun along the way. Take it one step further by brainstorming ways you can apply his language learning techniques to other parts of your life, whether it be computer programming or geography. Your imagination will be your only limit.