The first thing I buy is a State atlas, they're red in color, and show the entire states blm/state land etc...which out west pretty much means you can hunt it!

just goto amazon and type "utah atlas" or whatever state you want and it should pop up.

From there I order the blm maps through that states BLM, they're $4/piece I believe. Depending on the unit you wanna hunt, you may need more than 1 map, sometimes up to 2-4.