AdWords is a very powerful tool and if you are using it already or thinking about using have a read below for some possible extra tips to get you going.
Take advantage of Adwords Audiences
Audiences allows you to experiment with showing your ads to different groups of people. This is could be a powerful feature for your campaign. Being able to segregate your audience and split your ads to specific groups gives you control over split testing and homing in on your ad spend.
Spend your time and budget trying out different audience functionalities and see if they improve your campaign. However, make sure you record your changes and use a methodology so that you can work out good and bad performing changes.
Take time to learn the interface.