In the process of migrating my book library to Calibre I also reviewed my rating process, all my rating in Goodreads and my top 100 shelf.

This is my new logic for rating books:

★★★★★ - Fantastic book. A classic or a future classic. One of my favourite books.

★★★★☆ - Really enjoyed reading this book. Easy recommendation and a very good book.

★★★☆☆ - I liked it and it is a good, above average, book.

★★☆☆☆ - It was ok, but I would probably read another one.

★☆☆☆☆ - Didn’t really like it.