i m a medical student and have bookp to photosead. book is of 1500 page. earh page has diagram chart and summary box. it takes 2 hours to preview whole book. how can i do it in 3 min.

If it takes 2 hours you are not previewing.

Preview only takes 90 seconds for most books and most people need not bother previewing textbooks other than wanting to notice the authors writing style. You're going to work with them anyway so Less preview, PhotoRead, Postview and activate as needed. When it comes to postviewing and activation treat each chapter as a book in itself.

Alex