Question: I'm looking for a way to quickly learn about new topics without having to read a whole book, do you know of any services that can help?

One good option is Quizlet. This general-purpose learning site uses AI to help students learn and study subjects. It's got a range of tools like Magic Notes for converting notes into flashcards, Q-Chat for one-on-one tutoring, and Learn and Test Modes for a full study session. Quizlet also employs learning science methods like spaced repetition and retrieval practice to try to make its tools as effective as possible for learning.

Another good option is Unsummary. This AI-based service gives you quick access to processed information on a lot of material, including books, movies, TV shows, podcasts and text. It can summarize information in a few seconds, which can be useful for researchers, students and anyone who wants to get up to speed without reading books cover to cover.

If you prefer something more interactive, you might like Knowt. It converts your notes into flashcards and practice quizzes in subjects like math, science, history, literature and more. It offers unlimited free learn mode, practice quizzes and spaced repetition. Knowt also lets you import Quizlet sets and convert flashcards from lecture videos, PDFs and notes, so it can be a good way to get more use out of your existing learning materials.

Last is Mindgrasp, another AI-based learning assistant. It can help you learn more efficiently by creating notes, summaries, flashcards and quizzes from documents, PDFs, videos, podcasts and webinars. Mindgrasp's automated summarization and AI search abilities make it useful for students, professionals and businesses.