Zach Ritter , Mar 11, 2011; 04:25 p.m.
Well, in the old days, it was a straight up 50mm. For you, I might say a 35mm on DX is a good choice.
BUT, if you want wide, then it becomes a bit more tricky. The best thing you can do is throw on the 18-55mm and decide if you like shooting within it's range and where. If you find it too short, start looking at lenses shorter than 18mm. If you like the 18mm to 35mm range, use that as a starting point.
Also, I highly reccomend getting at least one prime to try them out. Some people love primes, some do not. If you can find a used 35mm f1.8 DX nikkor out there, it sould be a cheap way to try them with very little lost if you decide to sell it.