Welcome to the forum from Northern CA.

We spend a great deal of time hunting in NV.

Contact a local large animal vet and they will give you a list of what is need for your area. With steers it's a bit different than cows because they obviously won't be breeding

Think about what size your wanting to purchase.
Whatever you buy may come with a herd health program already depending on where they come from.
If your thinking about buying from the auction it's a different ball game. Buyer beware. It's like a hospital. Every disease can be on the grounds and exposing the animals to it.
Do you have a chute set up yet? It's very important you have a way to doctor your cattle and provide a safe environment to work for you, your vet and your livestock when you don't/can't haul to him/her.
To often we hear about "I can't doctor him/her or provide preventative medicine (ie vacs, wormer etc) because I have no way to contain them."
It's your responsibility to be able to take care of your animals.

Sounds like your already trying to do that by asking and doing research.

Think about how you can load the cattle if needed also.