Start with high-confidence living with ocd books, then narrow by subgenre or adjacent topics.
Freedom From Obsessive Compulsive Disorder
Jonathan Grayson
Obsessed
Allison Britz
The OCD Workbook
Bruce M. Hyman PhD LCSW, Cherlene Pedrick RN
When a Family Member Has OCD
Jon Hershfield MFT, Jeff Bell
Pure O OCD
Chad LeJeune PhD, Chad Lejeune
Thriving in Relationships When You Have OCD
Amy Mariaskin PhD, Kimberley Quinlan LMFT
The Intrusive Thoughts Toolkit
Jon Hershfield MFT, Tom Corboy MFT
The Anxiety and Phobia Workbook
Edmund J. Bourne PhD, Edmund J. Bourne
Stuff That's Loud
Ben Sedley PhD, Lisa W. Coyne PhD
Rewire Your OCD Brain
Catherine M. Pittman PhD, William H. Youngs PhD