There is so much in there! It is truly part of the foundation of our culture, and our entire world view.
unfortunately, what most people know about the Iliad they learned from the Brad Pitt movie...
The Brad Pitt movie had huge errors such as Hector killing Menelaus who survived the war and returned to Sparta with Helen and apparently patched things up. Telemachus visited them and Helen and Menelaus showed him great hospitality but could not give him any information on Odysseus.
At least they called swift footed Achilles’ men, “Myrmidons” as they had been created from ants.