1. Look for keywords on your own web site.
Think like a customer and pick the words that your customers might be searching on to find you.

2. Use a keyword suggestion tool.
Google and Miva both offer keyword research tools. The Google Keyword Tool has been updated to show actual search volumes rather than a graphic. Miva also shows search totals on its Keyword Generator. Yahoo no longer offer the Overture tool, but if you are signed up to Yahoo Search Marketing, you can use the Yahoo! Keyword Assistant to research new keywords.

3. Think about keywords that attract customers at each stage of the buying cycle.
The buying cycle has three major phases: research, shopping and purchase. The closer someone is to buying, the more specific your keywords should be. For example, customers may search for “guitar” during research, “Fender guitar” while shopping, and “American Standard Fender Telecaster guitar” when they’re ready to purchase.

4. Pick a mix of broad and specific keywords.
Keep in mind that using more generic keywords, like “guitar,” can cause you to go through your budget and may not lead to sales as often, but can be helpful for driving traffic from prospective customers who are in the research phase. Selecting more specific keywords may deliver fewer clicks, but they may be more likely to result in sales.