I recommend perusal of the list as it contains great information about the East Mojave area for the lay person as well as those knowlegable in the desert already. Northern central protion of the preserve on I 15. They have a large military AWD for those stuck off the beaten path. No services except a working post office in part of the old store. Porta potties and sort of a self guided tour of the grounds at the famous depot.
Camping is available.
There is an interagency fire station located here, along with a work center. Tecopa Link my third home away from home. California desert full serve campgrounds.