This is a great topic to write about. I’m not a big fan of seo. I just write articles.
But I can show you how you can know what keywords your website already ranks for.
First thing to do is to register a Google Webmaster Tools account.
Since I have register an account.
I’ll show you what mine keywords are.
You see performance, click on open report.
If you’ll scroll down you’ll see list of keywords your website currently ranks for.
PS. If you’re new to webmaster tools, get your account validated and wait for a week before your keywords will appear.