- Public libraries: Many public libraries have a children's section with Geronimo Stilton books. You can check out books for free with your library card.
- Bookstores: You can find Geronimo Stilton books at most major bookstores, such as Barnes & Noble and Books-A-Million.
- Online retailers: You can also purchase Geronimo Stilton books online from retailers such as Amazon, Walmart, and Target.
- E-books: Geronimo Stilton books are available as e-books from various online retailers, including Amazon Kindle, Apple Books, and Google Play Books.
- Audiobooks: Geronimo Stilton audiobooks are available from various online retailers, such as Audible, Libro.fm, and Downpour.com.