Using Subnav as main menu

[Bobthefarmer]

I took out the navbar and am trying to get the subnav to work. I can get the first sublevel to show, but not the second. Also, I've been trying to get all my links in manually, is there a way I can use my categories to become the menu items? website is http://bestbeatmaking.com if you want to look at the menu to understand what I am talking about.

Under my menu item "beat maker reviews" the sub level shows, but not the levels underneath them. However, under the "news and articles" menu item, "expert advice" will roll out its sub level. I cant figure out how to get this thing configured systematically.

Please, any help would be majorly appreciated.