What would make your project really useful is if a user can choose a level of detail to get a summary of a given resource (book, course etc) in her preferred fo

What would make your project really useful is if a user can choose a level of detail to get a summary of a given resource (book, course etc) in her preferred format. Perhaps, I just want a 5-minute summary to read or a 20-minute audio summary to listen on my commute. This is of-course a hard problem to solve via software, but manual summarization can go a long way.