View, and act. Make use of at least one – don’t be a fool.
Update – I’m now reading Andrew Branca’s new 3rd edition of his book and it’s obvious that there are many elements and subtleties of the law – as well as a large variation in the law between states – which aren’t addressed in the Armed Response DVD that I mention. So I suggest that you simply stick with Atty. Branca’s book, as well as the classics by Mas Ayoob.