Start with high-confidence therapy & counseling books, then narrow by subgenre or adjacent topics.
Trauma Informed Guilt Reduction Therapy
Sonya Norman, Carolyn Allard
Intentional Interviewing and Counseling
Allen Ivey, Mary Ivey
Breathwork and Psychotherapy
Jessica Dibb, Daniel J. Siegel M.D.
The Making of a Therapist
Louis Cozolino
Existential Therapy
Laura Barnett, Greg Madison
Already Free
Bruce Tift MA LMFT, Tami Simon