I think that while Zettelkasten may be useful for people who primarily want to publish writings, I decided that it’s the wrong approach for me. I don’t want to publish. I want to be able to organize my data so that I could easily reference later, whether it’s what I was doing for a particular customer, or what my kid likes to eat at a certain restaurant. “Linking Your Thinking” works much better, for me, for that use case. Same deal there: you don’t need a whole course.