How to i edit the meta tags and set my own keywords

If you have an SEO plugin installed, like All-in-One-SEO-Pack, then you can write your tags while using the Write Post or Write Page functions in the WordPress admin panel. It will appear lower in the page below the text editor.

Write your Title.

Write a brief description of the content of the page. Try to include your important keywords/phrases if possible as they will get bolded inside the snippet Google displays. This can make your description be more visible and induce a higher click through rate.

You may elect to write Keywords in the Keyword box. Google no longer pays much attention to keyword meta tags. Yahoo and MSN still give them some weight, but not much. It can be ignored.