Start with high-confidence grammar & usage for teens books, then narrow by subgenre or adjacent topics.
From Cover to Cover
Kathleen T. Horning
Just Write: Here's How!
Walter Dean Myers
How to Deal: Tarot for Everyday Life
Sami Main
The New York Times on the Web Crosswords for Teens
Frank Longo, Will Shortz
What's Your Story?
Marion Dane Bauer
Whatcha Mean, What's a Zine?
Esther Watson
Dear Ally, How Do You Write a Book?
Ally Carter