It's not often that I recommend something (especially when I'm not getting paid!), but I bought this guide to Google Adwords recently and I have to say that it is excellent.
I'd read a few articles by Ian Howie before, so I knew his writing style to be very clear and informative, so I decided to dive in and buy this e-book, written in partnership with the keyword research tool providers, Wordtracker.
The books costs $29 and if you want to get a grip of Google Adwords, I suggest you go and get it. It explains everything very clearly and then guides you step-by-step through the entire process.
Here's the link to it on the Wordtracker website:
http://www.wordtracker.com/ebooks/ppc-book
Enjoy!
