Here I’m going to write about one of the many possibilities that exists in making textbooks digital. The idea is simple. In a digital textbook for tablets one could have for each theory section or for certain exercises a link to a hidden collection of frequently asked questions and answers. Those questions could very well be crowd sourced. The idea is then that you first read the theory and if you don’t understand you go to the corresponding FAQ for that section. Hopefully this would make the book easier to understand and let you study better.