If you need to request permissions from an author or publisher, here are general guidelines, plus a sample letter you can customize.
Permissions is all about seeking permission to quote or excerpt other people’s copyrighted work within your own. Here’s when you need to seek permissions.
Fair use allows you to use someone’s copyrighted work without permission. However, invoking fair use is not a straightforward matter. Learn the 7 questions to ask to help determine if your use might be considered fair under the law.