ORDERBY

Ok I need some help. Please take a look at this

http://vodkapop.net/ro2/sort/11-to-20/

I want to sort the posts by their Level (Category Name) in ASC format. They are in a mess right now.

How do i do it? I looked at this
http://codex.wordpress.org/Displaying_Posts_Using_a_Custom_Select_Query

I don’t know what query to use from db, if I am even looking in the right place.