introductory reference for Hopf Fibrations I am looking for a good introductory treatment of Hopf Fibrations and I am wondering whether there is a popular, well regarded, accessible book. ( I should probably say that I am just starting to learn about vector bundles. )
If anyone with more experience could point me in the right direction this would be really helpful.

The book Topology and Groupoids (pdf available) has Chapter 5 on "Projective and other spaces" and p. 150 gives the Hopf map $p_V: S(V) \to P(V)$ where $V$ is a finite dimensional normed vector spaces over the reals, complex numbers or quaternions; the latter are fully explained.  
Another source is "Topological geometry" by I. Porteous, which also does Clifford algebras. 
