I'm not sure what you want to know? Everything?
My folks have ~300 acres, grandparents had ~120 acres, mostly cattle pasture. Close to 200 head between the two, a little bit of everything at one point or another, mostly Simmental, and Simmental influenced crosses, but there's been some Brahma, Angus, grandpa got on a Limousin kick for a while, dad has some Wagyu crosses now, and when I was in high school I had a dozen Angus/Holstein cross cows of my own. I was raised showing cattle, super active in 4-H and FFA, showing, judging, quiz bowl, etc., even went to college on an animal science scholorship before changing majors.
I'm far from an expert but I know a thing or two, if I were you I'd get in touch with your local Cooperative Extension Service, they'll have an agricultural specialist, or a few, tell them what you're wanting to do, invite them out to your farm, and they'll be able to tell you what to do or not to do, for FREE even. Support your Land Grant Colleges folks!
The Extension Agent will be significantly more familiar with what breeds, feeds, and marketing work best in your area, and what you can expect to reliably manage with the soil, vegitation, and space you have to work with.
I will say this, if you don't have a place to work cattle, i.e. some kind of working pen, head chute, and a safe/reliable place to load a trailer, don't even think about getting a herd, all the support structure should be in place first.