You might be wondering at this point, all this sounds interesting but who is Tiago Forte and why should I know about him? This concept is very much his brain-child and he's probably most known for this specific digital organisation concept which is also a course and book.
The video below explains what Tiago considers the Second Brain. See this video as your initial introduction from the eyes of the creator himself.
Tiago is probably one of the most popular productivity gurus, expert, mentor out there. He aimed to solve a problem that most people face in any kind of industry. We all consume content - even more so now with entertainment and academia shifting online. But what do we actually do with it? By learning about and experimenting with some personal habits and routines in combination with digital note-taking tools, we can begin to create a system that works for us.
If you want to know more about Tiago and what he does, check out his blog where you can access 99% of his material in small chunks. Or, if you're keen on investing your time and money, you might be interested in his paid course (not sponsored).