Honestly? 1. I wanted to make a PDF because later on I want to make a big fundamental book that I will sell :) It's kind of practice for me. 2. HTML is harder

Honestly? 1. I wanted to make a PDF because later on I want to make a big fundamental book that I will sell :) It's kind of practice for me. 2. HTML is harder to make. I mean, decent HTML. The book was made in Sketch, so it's way easier. 3. I use the book for getting emails for newsletter. But for HN I decided to put the direct link, so that the community doesn't have to sign up