Digital Advertising Tutorials
Some of the best digital advertising tutorials online.
http://www.redflymarketing.com/adwords-tutorials/adwords-basics/how-to-track-your-results/
One important milestone to turning your AdWords ad groups into moneymakers is deciding which of them are winners and which are losers. Tracking your results can help you do just that.
source
Credit to original author (click on youtube video for more info).