Start with high-confidence study & test taking skills books, then narrow by subgenre or adjacent topics.
How to Ace Any Test
Beverly Chin
Make It Stick
Peter C. Brown, Henry L. Roediger
Learning Outside the Lines
Jonathan Mooney, Dave Cole
Crush Your Test Anxiety
Ben Bernstein
The Dyslexia, ADHD, and DCD-Friendly Study Skills Guide
Ann-Marie McNicholas
Problem Solver Guide for Students With ADHD
Harvey C. Parker PhD, Harvey C. Parker