How to Study for a Career in Nanotechnology

I dunno... I get this feeling the field is kinda small. Don't you?

Small? I think you mean to say this field is about study of matter at smaller scale? nanotechnology is not small field in fact, its exact opposite; its an interdisciplinary science which involves maths,physics,chemistry and biology. Check out this map of science http://seadragon.com/view/4rn and you will know how big nanotechnology is :)