David Livingston: The best times to shoot an interior and an exterior are eastside in the morning, and westside in the afternoon. The north and south sides can simply be shot whenever the light is bright. For your lighting, try to limit the extreme areas that are too dark or too bright. You might need to add light to the dark areas, and pull the drapes in for some bright areas, or just wait around until the light is more even in that room.
David Livingston: When choosing an exposure, make sure to avoid over- or under-exposing a photo. Depth of field can be a difficult concept to grasp and execute. Have a tripod, and take a long exposure. Use the preview function on your camera, study what depth of field is, have a bigger f-stop. I'd recommend f16 or f22.
David Livingston: Really look at the compositions of each spot, and see if you like what is in and out of the frame, as well as how/where things are placed within the frame. When staging, work with one color direction, and layer that color throughout the photo to add richness and depth.
David Livingston: Both wide frames and tight frames work well for interiors. I'd recommend tearing apart magazines and studying the photos you like, and then trying to recreate them. One of the best pieces of advice I've gotten is to try to keep things straight up and down — keep your camera plumb, and and don't tip it up or down to get your shot. Instead, move the whole camera higher or lower to get what you want in the frame. In order to get an interesting shot, I think about whether or not I like the composition, or if I would want to walk into the space. The shot is interesting if it draws you in.