How to change shutter speed on a nikon D40?

Is shutter speed basically the same as iso or are they two completely different things? I really want to change the shutter speed to as fast as possible because I love shooting indoors but It's not very easy with the settings my camera currently has.

Ken Rockwell has a great write-up on how to set up a nikon D40. ISO and shutter speed are two different things.

Do you have an owner's manual? Have you read it? If not, why not? Details are all there.
If you don't have one you can download from Nikon.

Very obscene suggestion to you. Read something about photography basics.http://www.xs4all.nl/~wiskerke/artikelen/basic1.htm for example. Yes, you heard me right, I'm suggesting you actually make an effort to learn something. And it gets worse. After that get out your camera manual and find out how it works

They are 2 completely different things. One controls the sensitivity of the sensor to light (ISO), the other controls how long the shutter is open for (shutter speed). Both affect exposure of the image, along with a third fact - aperture of the lens.

Why do you want a fast shutter speed indoors? Indoor situations are likely to be dimly lit (compared to a bright day outside) and therefore trying to shoot a fast shutter speed is likely to give you underexposed images (ie.black), because with a fast shutter speed you are reducing the amount of light hitting the sensor. To compensate, you can open the aperture (up to its max) and/or increase the ISO (which makes the sensor more sensitive to what light there's) but both those options may be be enough. There's also a trade off - opening the aperture will give you a very shallow depth of field and increasing the ISO will give you noisy images.

I suggest you buy a copy of Bryan Peterson's Understanding Exposure and read it in conjunction with your cameras manual (if you don't have it you can download one from Nikon). The book will explain the interaction of ISO, shutter speed & aperture that affect exposure & your manual will tell you how to alter those things on your camera.

Time to seriously READ & STUDY the Owner's Manual for your camera and learn how to use it.

Shutter speed and ISO are two totally different functions and along with the aperture make up the exposure triangle. All three are variables and are interrelated so changing one necessitates changing at least one of the other two - and in some situations both.

You are somewhat confused about exposure since you say you "… Want to change the shutter speed to as fast as possible because I love shooting indoors… ".It doesn't work that way. Indoors usually means a low light situation and unless you are using flash you compensate for the lower light levels by using a higher ISO or a fast 50mm f1.4 lens or both. If you use the flash your maximum shutter speed would be 1/500 sec. Without flash your shutter speed is going to be much slower.

Go here: http://www.calculator.org/...osure.aspx Choose the Scene 'Domestic interiors at night, subject lit by campfire or bonfire' and ISO 800. Now look at the table of f-stop/shutter speed combinations. If the only lens you have is the usual 18-55mm f3.4-5.6 zoom, add 33% to the shutter speed shown for f4 to get an approximate shutter speed for your lens at f3.5. Not very fast is it? At f5.6 its even slower. To see the effect on your shutter speed if you used ISO 1600 just double the values shown in the original chart.

These sites will help you learn more about photography:

http://www.digital-photography-school.com
http://www.photonhead.com
http://www.kamerasimulator.se/eng/?page_id=2
http://www.illustratedphotography.com/photography-tips/basic