Yesterday, I was going back home from a long journey in São Paulo. While waiting for the metro to take me to the bus station, I decided to revist a good ol’ companion, but this time, the encounter was about to happen outside the physical media: The LaTeX Companion as an ebook. When I started using LaTeX, I was totally lost. What to do, what to read? Apparently, I should read The TeXbook — Don’s aw