Indoor settings no flash?
Tamron 28-70 AF
Settings for indoor ambient light...? No flash, no movement...
If there isn't any movement then set the camera on a tripod and use P. The tripod is to keep the camera steady since it is very difficult to hand hold one steady if the shutter speed is less than about 1/2xfocal length of the lens lens. If, for example, your lens reads 40mm then you can hand hold at shutter speeds faster than about 1/80sec, which would be 1/100sec.
You can set the ISO to a specific value or leave it set to Auto ISO. If you are a complete newbie then use Auto ISO. This will turn your expensive DSLR into a point and shoot camera but it will give you a chance to learn how to use it.
If you don't like the exposure for the subject then adjust the Exposure Compensation up or down.
I recommend you keep the Highlight Alert turned on so you can see any overexposed areas blinking. It is okay for things like reflections from chrome or jewelery to blink but white areas that should show texture like a shirt or dress should not be blinking. If you shoot a subject and can see the outdoors through a window behind the subject much of the outdoors will be blinking if the subject is properly exposed.
Once you get used to using the camera in P mode switch to one of the non-auto modes and really start learning how to use your camera. I recommend you read the manual but Canon also has some very good free video tutorials on how to use your camera.
Canon says these video tutorials can be watched on the camera's LCD but frankly that is a stupid idea. Watch them on your computer monitor while you have your camera in hand so you can follow along.
Living and loving it in Bangkok, Thailand. Canon 7D - See the gear list for the rest.