Top books on r/improv

Improvising Now

Upright Citizens Brigade Comedy Improvisation Manual

Matt Walsh, Ian Roberts, Matt Besser

Theater Games for the Lone Actor

Improvisation at the Speed of Life

T.J. Jagodowski

Directing Improv

Truth in Comedy: The Manual for Improvisation

Long-Form Improv

The Complete Improviser

Impro: Improvisation and the Theatre

Keith Johnstone

Improvise: Scene from the Inside Out

Behind the Scenes: Improvising Long Form

Improvisation for the Theater

The Art Of Chicago Improv