You can arrange your book list exactly the way you want by hiding books or changing the books' order. To do so, select the subject in which the book is located. Press the "edit" button.
You'll notice that eyes appear at the left side of the book. Click the eye icon for the book you want to hide. A closed eye means the book is hidden. An open eye means the book will be shown in your book list.
The the right of your books, you will see three stripes. Click the stripes and drag to order your books.
This way, you can arrange your book shelf exactly the way you want! Click "done" when you have finished editing your book list.