Hi. Im very new to maya. Ive been doing some basic structure modelling, just to get more familiar with the software. Now I noticed a problem. I saw this tutorial that talked about normals, he had to reverse the normals to get the "blinn shader" or whatever on the inside of the box (so he could later texture it).

Now I dont really understand what normals really is (the way the face is pointing or something). Anyway, it seems my polygons have "normals" on both the inside and the outside cuz its equally shaded on both sides. This makes me believe that all my models take up 2x as much resource since they actually have two faces per polygon.

Grateful for clarification.

Regards
Richard