Like the visitor center at a National Park, this Visitor Center is staffed by rangers and others well versed in details of the park and the area. We had several long conversations about the geology; got valuable suggestions (and directions) for both hikes and scenic drives.
The Visitor Center also houses a wonderful huge three-dimensional model of the Sierra Nevada region, including Death Valley. This is really helpful in understanding the interplay of mountains and valleys. (It also shows electric transmission lines and aqueducts). Worth a trip over from town just for the map.
A very fine shop, also, with many choices of detailed maps as well as books and souvenirs.