If you want to go a bit beyond that, I think Ultimate Guide to Google AdWords [amazon.com] is an excellent resource. You might be able to find it in your local bookstores (where you can flip through it to see the content before you buy it), or just order it online.
But you better off going to Adwords Learning Center first.
You have to put yourself in their shoes and try to figure out the angle they are looking at things from. Then do some testing, adjust and test some more. Eventually you'll have a "eureka" moment and it'll be smooth sailing. (Until they change the rules again in another 3 or 4 months...)
:)