Please give me a good keywords?

[Richard]

For a start, you can use the following to conduct a keyword research:

Google Adwords’ Keyword Tool
Google Insights for Search
Google Trends Keyword Demand Prediction
Microsoft Advertising Intelligence
Wordtracker’s Free Basic Keyword Demand

Then you can evaluate competition by checking the top 10 sites for a keyword using tools:

SEO quake firefox plugin and the Free Traffic Travis (competition feature)

But the best keywords are the ones that are highly targeted based on what you are promoting. Long tail keywords are also great. Identify your top competitors, analyze the keywords they are using (through the tools mentioned) and choose the best ones.