i will not say much but my humble request, pl do not get into megapix or Dxxxx/xxxxD
dilemma, as you are not going to shoot huge film posters or 6x6 feet poster; 10 mpx will be enough for you. i have searched lot about the same, until i found the line "learn the basics of SLR with a good body & lens" and finally got D3100 over Canon 550D (nikon has easy menu and the color tone is little sharp over canon). its on you OP, what to choose.
secondly, i would suggest to go for only body and opt 35mm prime lens (assuming you have D3100 which is DX format and 35mm will give you 50mm on 1.5x crop factor). whether its canon or nikon, if you have only 18-55 or 18-105 or vis, you will not enjoy the bokeh with f/1.8 as those lenses has f/3.5 @ 18mm. dont get confused why 18-55mm wont work at 35mm, cause 35mm prime has only one focal length where you have the control on f stops.
i will not recommend to by a 50mm prime on DX SLR cause which will give you near around 80mm on 1.5x crop factor [you may google it, from where i have got all those lines
learn the basics over Aperture/Exposure/shutter etc and go forward for a high end body. [you may noticed that high end bodies has 10/12 mpx, so mpx does not matter]
I am having D3100 with 35mm (which is mounted 5 months back and still mounted for every occasion) with Simpex 333 tripod and going really good.