Donald Trump thinks he knows what's best — when it comes to how to make a deal or what shampoo to use.

This is the conclusion we here at Vox drew from reading all 12 of Trump’s books on politics and business. We wanted to better understand Trump’s candidacy and how his experiences and outlook on life might shape his views as a world leader. And, frankly, we wanted to understand what makes him tick.

And one thing you realize, reading through hundreds of pages of Trump’s text, is that this is a man who is confident he can advise people on pretty much everything. His books contain advice on everything from dealmaking ("Always shoot for the top") to how best to greet another human ("I believe in no handshake") to, yes, even shampoo ("The best shampoo is Head & Shoulders").

There were so many of these little moments — where Trump explains how he sees the world working and offers advice on how best to navigate it — that we used them to create this interactive.