Lots of nice people and organizations have pointed out typos, created complex graphics, and recommended improvements. They include:
Bonita Dueck, MLIS, University of Calgary
Erik Geiger
Randy Schrecengost, P.E.
Sowjenya Parthasarathy, AI UX | Context Designer, Funnel, Sweden
Seenivasa Ramadurai, AI Solution Architect
Kathryn Roosa, faculty, Austin Community College (Austin, Texas)
Ervin Gonzalez
Jane M. Singh, Senior Product Marketing Manager, SEON
Robert Rodriguez
Etiido Uko, Engineer, Senior Technical Writer, Canada
Ianthe Sarrazin, Freelance Technical Writer, Editor, and Geoscientist
James Ball
Kim Bravo, Executive Assistant to the CEO, Epiphany Dermatology
Cari Anne Cooney, Writing/editing Team, Engineering360 and Electronics360
Rob Napier
Sue Himmelstein, freelance technical writer, GlobalSpec
GlobalSpec — Alternative & Renewable Energy
Eric Holscher, Co-founder, Write the Docs
GlobalSpec — Science & Lab Equipment
and many more . . .
