Re: what is adwords?
Hi Jessica W
Welcome to the AdWords community :-)
Here is a video giving a brief explanation of AdWords, you will notice that there are also many other video's about different aspects of AdWords on this learn with Google YouTube channel.
You can also learn more about AdWords by reading various articles in the help centre, and the certification centre too. If you have any questions, you can post back her and we will do our best to help you.