So many changes from the book it may as well be a different show with the same name.
I can understand they had a limited amount of time so certain things had to be cut out or changed but some of these changes from the book felt completely unnecessary.
The decision to wait to the second last episode to reveal who the the main character was when in the book it was clear early on, was to me a puzzling decision, which stifled the main characters development and made them all feel like non entities. So much time was spent on secondary characters when it could have been developing the main ones.
There were parts of the show which were good but overall found it to be a disappointment adaption so far.