Building a second brain is kinda easy. First, you only need a notes app or an analogue notebook to capture all your thoughts and to-dos in one place. In the second step, you will organize after projects, areas, resources and can archive things you have done. Distilling the information you have is a crucial step in the second brain method and helps you find the key points of all the stuff you read, watched and listened to. Finally, you can express all your knowledge: Term papers, essays, presentations, or a social media channel.