Does anyone have a workflow for book summary services?

I’m curious as to how popular book summary services (such as Shortform, Mentorist, Blinkist etc) are and how you look to get the most value out of them.

Does anyone have work flows that enables them to track the summaries of books and perhaps learnings, next steps and actions etc?

As an aside, if anyone has any thoughts on the services themselves, that would be great!