Why not use the computer to help you understand the text. The idea is that you can practice words and meanings for the books you want to read in advance. It would give you a much better experience. I would like the Project Gutenberg. The free ebook project to collect data on their books so the reader could practice words he doesn’t know but are in the book. The practice would be done on any of our computing devices. The PC, tablet or phone. I don’t know how this would work but I think you need to group the words together. For example you have basic, intermediate, advance, new and old english words. I think however you can produce a list of the most frequent difficult words of each book. This could work for paper books also if the books has already been scanned. You just search for the book and go to the word test.