The show and books are both so far off the rails, and yet… I just keep submitting my library holds and reading these. They’re so quick, and I do still enjoy the style Kepnes uses - the books basically make fun of Joe as he continues to think he’s amazing and then fail at everything (other than getting away with murder). I enjoyed the side characters in this one more than I have any of them since book one. I also liked the direction of the story in this much more than I did the latest season of the show. 
This book focused on Joe getting into a writing fellowship, and if you’re looking for a book with a similar (but non-stalker-Joe) plot, I highly recommend The Writing Retreat.