I quite liked this Becky Cloonan post on self-publishing comics, as it gets into details with which a lot of similar posts don't bother, like how digital sales might become a component of those sales and the basic "why" of doing it at all. I have to imagine there's something in there if you're thinking about doing this or have done it, as I enjoyed it without having anything close to a shareable, like experience or overlapping curiosity.