Upload & Sell: Off
Supply hubs (groceries, gas) are Furnace Creek for lower DV (Dante's View, Zabriskie Point, Devil's Golf Course, West Side Road, Artists Pallette, Badwater, Salt Creek, Mustard Canyon, 20 Mule Team Canyon). Stovepipe Wells for middle DV - (Mesquite Dunes, Devils Golf Course, Salt Creek, Titus Canyon, Ubehebe, Racetrack, Mosaic Canyon) and Big Pine, CA for North DV (Eureka Dunes, Saline Valley).
All those places I mentioned are worth checking out. Saline Valley and the Eureka Dunes would be dedicated trips, the former I would recommend doing with a group of vehicles for safety reasons and is some off-roading to get around there due to washouts.
A year ago I gave some good friends a personal tour of Death Valley. We went to Badwater, Zabriskie Point, Dante's View, 20 Mule Team Canyon, the Mesquite Dunes, Mosaic Canyon and the Racetrack in the course of 3 days and that gave a good first taste of what the park can have to offer.
You'll probably fall in love with it as I did in 2008. I can't get bored there in that park. I love it. You can see 310 pics of mine from there here: http://www.flickr.com/photos/kurtlawson/sets/72157611488958316/
I try to go back there whenever I can during the November-April time frame when it's not too hot.
Keep in mind that park regulations mean you have to stay in a campground in most of the park. There's a backcountry camping map. http://www.nps.gov/deva/planyourvisit/upload/Backcountry-Roads-Map.pdf
This map provides info on where you can camp without being in a campground. I've been busted before sleeping in my Xterra in an area that is not a designated campground, though there have been other times I wasn't busted when i was doing star trail photos through the night. If you're in the main park, then use a campground even if you are sleeping in your jeep.
Check the Death Valley Morning Report for road conditions:
as well as the DV Roads facebook page:
It looks like Titus canyon is open again. It was closed for awhile due to snow. The Road from Ubehebe to the Eureka Dunes is closed still, but open from the west from Big Pine. Things can change if there is a storm so keep up to date.
Above all, enjoy the vast alien landscape that makes up this incredible treasure of a park. You can't go wrong at the dunes. Arrive early enough for evening to hike to where there are no footprints, or scout a location for morning where there are no footprints if you care about such things. Dante's View is usually worth a mid-day drive if you don't decide to be there for a magic hour session, just to appreciate the view. Zabriskie Point is full of places you can wander to that are not the exact same view everyone does. Basically, there's endless possibilities. Good luck!