The nonfiction genre that typically teaches the reader a process is the "how-to" genre. This genre is specifically designed to provide step-by-step instructions and guidance on how to perform a certain task or achieve a specific goal. If you come across a book or article labeled as a "how-to" guide, it is likely to provide you with practical knowledge and techniques that you can apply in a systematic manner to learn or accomplish something.
The nonfiction genre that teaches the reader a process is the how-to genre.