It has been pretty amazing to follow your journey, Arvid. The blog you just wrote is a godsend for anyone looking to self publish. There are so many self-publishing resources not known to most of us (editing tools, proofreader, cover design, distribution).
The section on ISBN was super critical for me personally.
I've met Arvid on a meetup here in Berlin and am following his journey ever since. I read the book and found it to be very actionable and detailed (especially, for me, the tech part of it). I've enjoyed reading about the "war stories" combined with the learnings from the sold startup. Can recommend it if you are into that.
It's great to see the amount of resources he posts for free on the blog / Twitter without locking them away. Thanks Arvid!
I've always found the indie hacker/bootstrapped founder community to be very open and supportive. Many of the people who wrote the guides and articles that I learned lots from have never paywalled their content. If at all, they added some sort of additional product, a course, a book, or consulting opportunities. But the content was always free for those who'd need it most. And that's what I wanted to do as well.
The section on ISBN was super critical for me personally.