This is a book that is designed to go with the uValue app. It provides
background material for the models
in the app and suggestions on
model to use and how best to estimate parameters.
This link provides data on both industry averages (on risk parameters,
profitablity and pricing) and macro data (on default spreads and equity
risk premiums). It is updated at the start of every year.
You can take a class (unofficially, of course) on corporate valuation
with Professor Damodaran at this link. Download lecture notes
watch webcasts of his
lectures. You can even take the exams and grade yourself!