I'm moving stuff around and I forget how heavy books are! I have a lot of books and what you see here is probably just ⅓ of them. "So, Gustavo... if you like to read so much, why don't you write a book instead of recording lectures?" Look, I'm sure it would be a lot easier to simply write a book. I know this might sound arrogant but I promise it's not! I noticed that if something takes me one day to write, it takes me a about a week to record a lecture on the same topic. Yes, I've thought about writing books before, but there are two main reasons that made me step back. First, most publishers that approach me to write a book don't really want me to write a book because they think my content is good. They are really after my followers and my students. That's why we see so many "influencers" writing mediocre books; publishers want their followers. PacktPub and Manning are champions on that; NoStarch is not that bad. And I get it, some people do it for the "look mom, I published a book!", but I'm too old for that and the whole prestige & ego thing does not get my blood pumping. The second reason is because it doesn't matter what most people say, looking back at my personal learning path... it didn't matter how much I read about a topic, the *first* time a concept clicked with me was usually from a live lecture, a simple conversation with a friend, or from a video lecture. There are some very (very!) well-written books that manage to break that curse, but the truth is that complex ideas rarely clicked first time with me just from reading about them. It was always from someone moving their hands furiously while they are explaining something, or from a well-timed finger pointing to a variable on a formula, or by simply changing the tone of voice to emphasize something important at the right time. Animations are also very good at that, and more modern online resources like videos and blogs use them really well. And the reason I buy so many books is because they worked great *after* I overcame that first brick wall that made the topic less intimidating. Still, most of my initial "aha!" moments didn't come from books and I usually buy a book only after I had a super enlightening lecture about a topic. That's it! That's why I don't think I'll write books and why I prefer to teach stuff showing my face. Who knows, maybe I'm someone's first *click*.