Make sure your keywords and landing page are all closely related to the terms that a customer might be searching for or that would appear on websites a customer would visit.
A free Ad Words tool, Keyword Planner can also help you choose competitive bids and budgets to use with your campaigns.
Whether you're new to online advertising or an experienced pro, you can use Keyword Planner to lay the groundwork for a successful campaign.
This article explains how keywords work, where your ads will show, and how much they cost.
If you sell frisbees, you can add "buy frisbee" as a keyword in your Ad Words campaign.