Hi Janet: I started out publishing just as me, but gradually submitted some of my articles to publications within Medium (which is a good way to widen your exposure). I was fortunate to eventually also contribute to Elemental, a Medium-owned publication that was professionally staffed and edited. Elemental is no longer staffed. Now some of my articles are published under my own blog, and some I still submit to publications within Medium run by other people (like "In Fitness and in Health." In either case, I own the copyright to these articles, so I'm free to use them elsewhere as I wish, including for books. If I use an article as part of a book, there's no need to change the original article nor manage it in any way. In my book, however, I note in the introduction that some of the material has been previously published on Medium, just for the sake of full disclosure. Hope that answers your question. If not, ping me at rob dot britt at gmail and I'll keep trying.