anyone know how to use web master tools for SEO?

[Imisidro2]

What do you mean by "web master tools for SEO?"

Do you mean Google Webmaster Tools http://www.bing.com/toolbox/webmaster‎?

Those are a MUST for any website owner, and understanding the reports they give you is essential -- from the crawl rate to HTML errors to search queries to links to your site, etc.

There are also a number of other tools that you can use, from SEOMoz's various tools to Majestic SEO's backlink checker

But start with Google Webmaster Tool. It is the ONLY place where Google will tell you what it doesn't like in your site, from unnatural inbound links to increase in authorization errors to existence of malware. It is also the only place where you can file for reconsideration requests if your site has been slapped with a manual penalty (GWT won't tell you though if your site has been hit by algorithmic penalty, though you will be able to see crawl rate and search queries going downhill if you're hit by an algorithm)