I second what mike says...all u need to realise is that the approach u take to modelling anything, is similar to that of drawing. When u aim to draw something, u break it down into basic shapes in order to create the simple structure. Then u define each area more and more until u begin to shape ur drawing. Its much the same with modelling. U have the primitve shapes which u mold to ur liking, and then u join these together to form ur model...

It makes modelling a seemingly difficult structure alot easier if u simplify it first. It becomes less daunting