I am the type of person who starts books and keep many in progress.
I created a next action list called Reading in Progress in my list manager. These usually contain a link to an Obsidian MOC entry about the book, so I have a collection place for knowledge gleaned from that book.
When I finish the book, I mark the finish date in the list, mark it complete and carry the finish date over to the Obsidian entry for that book.
This list is more a reminder of those books I have in progress and a handy way to create reference related material about them.
I also do this for audio books, ebooks, etc. where I want to collect information about them.
When I receive a reading recommendation, I make an entry with the book in my Someday Maybe list (I use the tag #℠Reading to be able to generate or connect to this list). I put the person referring and the date they made the recommendation.
I think my Reading in Progress list functions more as a project list for reading.
Hope this helps,
Clayton
Confidence is not "I know what I'm doing."
Confidence is "I know how to find that out" and "I know how to learn new things" and most importantly "I know when I don't know what I'm doing, so I stop and find someone who does"