Is there any way that you can look at the inside of a cube and edit it from the inside? If so is there a way to see textured faces on the inside of a cube so they aren't transparent?
When you move the camera inside the cube you can't see the textures because they are hidden if the faces normal (cyan lines starting in the middle of each face) points outward.
In edit-mode you can toggle (with all faces selected ) the normals inside out with the Flip-Directions command.
For the images the top face if the cube was hidden H and display of normals activated in the properties panel:
Another way is to use Clipping Border.
Press Alt-B to set the border. It will hide anything beyond the border from the original view angle, and show the inside of a mesh object.
When finished, press Alt-B again to clear the border.