Im looking to start developing with flex using the SDK NOT the builder. Am I right in thinking I can use the libraries from the SDK and use the flash IDE to develop my flex application. I have a book on AS3 but it looks like I still cant see what an mxml file is, i just see packages ?

I would like to know how to get started and publish client side test scripts in the first instance, this book isnt helping because it assumes im using flex builder, which I dont have.

How can I get started using the free SDK ?
thanks, I didnt see the links above as helping.