Start with high-confidence modern dance books, then narrow by subgenre or adjacent topics.
Margot Fonteyn
Meredith Daneman
Feelings Are Facts
Yvonne Rainer
The Dancer's Way
Linda H. Hamilton, Ph.D.
Martha Graham
Neil Baldwin
Ballet and Modern Dance Third Edition
Susan Au
Dance We Do
Ntozake Shange
Howling Near Heaven
Marcia B. Siegel
A Guide to a Somatic Movement Practice
Nancy Topf
Rooted Jazz Dance
Lindsay Guarino, Carlos R.A. Jones
Critical Moves
Randy Martin
Always More Than One
Erin Manning
Dance Floor Democracy
Sherrie Tucker
Inside Tap
Anita Feldman
The Vision of Modern Dance
Jean M. Brown, Naomi Mindlin
Introduction to Modern Dance Techniques
Joshua Legg
Diaghilev's Empire
Rupert Christiansen
Tango
Robert Farris Thompson
Dance in America: a Reader's Anthology
Mindy Aloff
Creative Dance for All Ages
Anne Green Gilbert
The Choreography of Everyday Life
Annie-B Parson