Hiya! Jared Diamond and his book Guns, Germs, and Steel get a huge amount of discussion in this sub (just do a search for "title:diamond" or "guns germs steel"). I've pulled out a FAQ link & a few of the more recent discussion threads to get you started

• How do historians generally feel about Jared Diamond? - a quick tl;dr

• 130 pages into Guns, Germs, and Steel right now. Should I stop? Am I wasting my time with Jared Diamond?

• What chapters/concepts/etc. from Jared Diamond's "Guns, Germs, and Steel" are flawed, false, or "cherry picked"?

• FAQ section Historians' views of Jared Diamond's "Guns, Germs, and Steel"

• recent FAQ follow-up After glancing through all the Jared Diamond rebuttals on this sub's FAQ, it seems as though geographical determinism is largely discredited. But I don't understand how that can be the case, what else is there?

• another one Curious about the sidepanel linked criticisms of Guns, Germs, and Steel

Most of these posts have been archived by now, so if you have follow-up questions for any of the users, just ask them here & tag their username to notify them