Nikon lens for D3000?

Hi, I'm wondering which lens I should purchase for the D3000 I MIGHT buy.

The 50mm f/1.8 AF-S: http://www.amazon.com/...004Y1AYAC/

Or the 35mm f/1.8 AF-S DX: http://www.amazon.com/...001S2PPT0/

Is there a big difference between these two? They will BOTH auto focus on a D3000, right, because they have AF-S on the ends? (Sorry I'm new to photography and often get confused). What does the DX mean, though? This is what confuses me. Also the "G." I would love it if someone provided me a link teaching me these terms. Please inform me on anything else you know about these lens!

This link will help you see what each focal length "sees" subjects

http://imaging.nikon.com/.../index.htm

The 50 mm is a medium telephoto lens used by many portrait photographers use

The 35 mm is the equivalent of a "normal" lens when used on your D3000

Pick the lens you think you will use most

First we have to discuss what DX means.
All of the Nikon DSLRs (plus the Fujifilm DSLRs) have a sensor that's smaller than a 35mm frame. It's often referred to as APS size, as it's very close to the frame size of that now mostly forgotten film type.
To wit, the 35mm frame is about 36mm across the long axis, while the Nikon DSLRs are all about 24mm across the long axis. That means that any 35mm Nikkor lens has an image circle that is far bigger than is necessary on the DSLRs. The DX series lenses are designed with an image circle more appropriate to the smaller sensor size of the digital lineup. Essentially, these lenses are designed solely for use on Nikon DSLRs (and the Fujifilm DSLRs). The advantage of a DX lens is that it can be smaller and lighter than a lens of similar specifications that needs to cover the full 35mm frame.

the best site for your understanding. Are given below.
http://www.bythom.com/18200lens.htm

Both will work fine on your camera. Both are good and affordable lenses. Thing is, which is best for you.

Take a piece of masking tape, "lock" your kitlens on 35mm and walk around with that for a few hours, see how that works for do. Do the same on 50mm and you'll know which one you should get.

Oh… DX means it's for cropped sensors like your camera, doesn't work well on D700 and up, doesn't work on film either. G means it doesn't have an aperture ring. That's only a real issue if you wanted to use it on an old Nikon film camera.

I have both the 35mm f/1.8 AF-S, and a 50mm f/1.8 AF (not the -S version). Both are excellent tools on my Nikon cameras and provide slightly different viewpoints. On cropped sensor Nikon, the 35mm gives you a 52mm view and the 50mm will give your a 75mm viewpoint.

The 35mm, thus becomes the "new normal" for DX cameras and the 50mm is a great portrait length short zoom. Look through your kit 18-55mm lens at the 35mm and the 50mm setting to see the exact viewpoint. If you were to only buy one, buy the one that seems to be the view you'd use the most.

AS for terminology:
DX means the lens is suited for the smaller sized sensor of a DX (cropped sensor) camera. On a FX (full-sized sensor) camera like a D700 or D3, the edges of the image would be cut off (vignetted) because the image size is smaller than the sensor. Fortunately, Nikon FX cameras automatically switch to DX mode and utilize the smaller portion of their sensor with DX lenses.

G means the lens does not have an aperture ring. Older Nikons had the photographer control the f/stop by rotating an aperture ring. All current Nikons allow the photographer to control the f/stop with a command wheel in the camera body.

If you have any other questions, please feel free to email and ask.