The webreader for e-books is not very user friendly. It does not work on chromium browser for linux. On windows, there is not option to rotate the page when required making it difficult to view the diagrams which are in landscape mode. Also the offline version does not work well. Rather offline version usage needs more clarity. When accessing the book, sometimes the page gets refreshed to an earlier point of reference making it cumbersome to go to the page of interest. Some basic importa...