What we will do in Google adwords. Think as who is starting newly in google adwords, what he doing, i mean what is the a-z of google adwords.
getting traffic to your website and generate sales... Measure how much you spend and how much you make, that's ROI.
i'm newbie too, i get a lot of google ads from this forum. study is very important to make money throught website traffic.
The Adwords Help Center and Learning Center are great starting places. After you feel comfortable with the voluminous amounts of information provided there you should read the major forums. Direct feedback from people who use Adwords has been the best source of information for me. Good Luck.