Start with high-confidence aerobics books, then narrow by subgenre or adjacent topics.
30-minute-a-day Body Challenge
Simon Waterson
The Realage(r) Workout
Michael F. Roizen, Tracy Hafen
G-force
Gunnar Peterson
The Oxygen Advantage
Patrick McKeown
Anatomy of Exercise for Women
Lisa Purcell
The Athlete's Way
Christopher Bergland
The Ultimate Fit or Fat
Covert Bailey
Water Fitness Lesson Plans and Choreography
Christine Alexander
Your Water Workout
Dr. Jane Katz, Jane Katz
Fitness After 40
Vonda Wright, Ruth Winter
8 Weeks to SEALFIT
Mark Divine
Ruck Fit
Kayla Girgen CPT RD LD, Kayla Girgen
Ellie Herman's Pilates Workbook on the Ball
Ellie Herman
Capoeira Conditioning
Gerard Taylor, Anders Kjaergaard
Cardio Strength Training
Robert Dos Remedios
Make the Pool Your Gym
Dr. Karl Knopf, Karl Knopf
The Women's Health Big Book of Exercises
Adam Campbell, Editors of Women's Health Maga
The Bodyweight Blueprint
Brad Kolowich Jr., Cody Rhodes