This book gathers decades of research into pre-Columbian life in the Americas in ways that completely upend popular knowledge on the subject. Mann treats the subjects with the correct amount of respect and rigorous scholarship. He shares the outstanding achievements and complex societies present by 1491. I consider myself a historian and have an interest in pre-history, but knew maybe 5-10% of the topics covered by Mann.

If you want to start de-colonizing your perceptions and knowledge, this is an extremely accessible place to start. After this, seek out books by indigenous authors.