Currently, the site is in the process, like Neil said, of providing many song tutorials. This will include songs in the metal genre along with just about every other style you can think of. Expect a huge flood of these by the end of 2009. As far as metal lessons, there is a wealth of material on this site in that style. Below is a link to our page that features the lessons the site has in the metal style.

http://guitartricks.com/style.php?input=Metal

Could you enlighten me on what all metal bands influence you and what you are looking to learn/play in the style of? Here is a list of my favorite metal bands that have inspired me over the years;

Metallica
Between the Buried and Me
The Mars Volta (metal to some extent)
The Dillinger Escape Plan
36 Crazy Fists
Candiria
Killswitch Engage
Mastodon
Megadeth (Rust in Peace specifically)
Dream Theater
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