yes, we Eurasians are the original people of the horse - from domestication of the equus caballus to inventing of the chariot, horseback riding and fighint from horseback by turning horses into magnificent war steeds.
so today I will just share two links coming from this Y-tube channel - Study of Antiquity and Middle Ages - where guests and their host talk about the ancient Indo-Europeans, the people of the horse of the ancient world.
First, ancient Indo-Europeans and their DNA - talk with Razib Khan.
and I can still recommend prof. David Anthony (here his lecture from 2013) and his book The Horse, the Wheel, and Language. And the academia site of his wife's, Dorcas Brown, works related to the Indo-European origin, horse domestication and ancient equestrian research.
and on Archive.org you can find prof. Marija Gimbutas excellent works.