BOOK 4 under DEVEL.
suitable all users
suitable ultra-broadband speeds
iTunes format for ibooks, EPUB [ mb] TBA
These files are pdf format, capable of being transferred to any ebook reader,
else install Adobe Reader first if you have Windows/Mac.
[Ensure you unselect the middle panels Optional Offers: check box first].
If you have an Android or Apples IOS like iPhone, iPad or iPod,
I recommend Adobe Reader via Googleplay and Goodreader respectively.
Else you can read online without installing anything!