It is possible to read a book and enjoy it.
To move on to the next book and enjoy that as well.
Sometimes you might decide to retrace your steps and read a book for a second, third time, just for enjoyment or for reason of being struck by the content.
There is another way of reading a book. Delve into it. Look for concepts. Unearth a philosopher with a concept. Compare thse concepts and write an article about it.
Alettie van den Heever studied a novel by Lauren Beukes ‘Zoo City’ and she wrote an deepdigging article about it.