Blinkist and skimming a book have their place for getting some of the key points, it's hard to find the time to read all useful books.
But I agree that to really get the most out of a book, reading cover to cover is likely most immersive, impactful, maybe followed by listening to the auduibook from start to finish.
Hypothesis is one that has been interesting to use for web article annotation. It lets you save quotes and comments on articles https://web.hypothes.is/
But I agree that to really get the most out of a book, reading cover to cover is likely most immersive, impactful, maybe followed by listening to the auduibook from start to finish.