Google introduced free access to hundreds of textbooks within Gemini Notebook, drawing on sources including OpenStax, Open Textbook Library and S Chand in the United States and India. Users can choose them through the Add Sources menu and create summaries, flashcards and quizzes, with citations linking answers back to the material. This reduces the need to obtain files beforehand. Availability is limited to the provided collection, not a blanket license for commercial textbooks, and generated answers still warrant checking against their cited passages.