Reedsy is a full-service marketplace for independent book creators, providing connections with editors, designers, illustrators, and more. Rekka used their services to hire a proofreader for Flotsam back when it was still on the self-publication path. She found the experience easy, and the results very professional.
They also provide helpful articles to edify indies on all phases of the publication process. The latest is a great breakdown on the options an indie has for distribution of digital books, complete with a helpful infographic for quick reference.
Check out their article at: https://blog.reedsy.com/ebook-distribution/