I had an Air 1 on iOS 11.3. I sold it because every time I used iBooks to read large books, it would crash. One of my books is 782 pages, 28.2 mb in size, PDF format. I plan to use the 2018 iPad to highlight text and the Apple Pencil to write notes as well. Does anyone know if the 2018 iPad can handle large books? Is there a specific app that people recommend to view books and write notes?