Start with high-confidence brain & behavior books, then narrow by subgenre or adjacent topics.
Resilient
Rick Hanson PhD, Forrest Hanson
Mindsight
Daniel J. Siegel M.D., Daniel Goleman
The God-shaped Brain
Timothy R. Jennings
The Hidden Spring
Mark Solms
You Are Not Your Brain
Jeffrey M. Schwartz, Rebecca Gladding MD
Accessing the Healing Power of the Vagus Nerve
Stanley Rosenberg, Stephen W. Porges
Wired for Love
Stan Tatkin PsyD MFT, Harville Hendrix PhD
The Polyvagal Theory Workbook for Trauma
Arielle Schwartz PhD, Linda Thai LMSW
Unstressed
Alane K. Daugherty PhD, Habib Sadeghi DO - foreword
No Self, No Problem
Chris Niebauer Ph.D., Chris Niebauer