For starters I can say that one can model stuff in several ways.
Sometimes by creating surfaces via curves, or by manipulating existing objects/surfaces. There are a number of primitives in maya that is quite handy for modeling, you create say a polygon cube, and then you tweak the vertices/points to desired positions.
The nurbs cube is annoying I think but handy sometimes.
There is so much to say that I hope you simply state your questions whenever you feel like it.
I do not support Bush! Nor Saddam! Long live UN!