“I’ll show you how this simple habit is the first step in a system I’ve developed called Building a Second Brain, which draws on recent advancements in the field of PKM—or personal knowledge management.I In the same way that personal computers revolutionized our relationship with technology, personal finance changed how we manage our money, and personal productivity reshaped how we work, personal knowledge management helps us harness the full potential of what we know. While innovations in technology and a new generation of powerful apps have created new opportunities for our times, the lessons you will find within these pages are built on timeless and unchanging principles.”