This is a nice template. A few things to take note of:
There are three separate menus. At the very top is a menu which can be used for external links, or dividing the internal installation of MODx into different virtual sites, for example a multilanguage site.
In the case of a list of external links, it should use an unpublished (or not shown in menu) folder of weblinks. In the case of internal virtual sites, set the DropMenu snippet there to use 0. Each folder in the root of the Tree will contain the virtual site. There are a number of ways to control the main menu in that case, for example see
http://modxcms.com/forums/index.php/topic,409.0.html for one method.
The main menu is a single-level list. Any submenus are displayed in a sidebar menu. In these circumstances, you cannot use an empty folder to contain a submenu. All of the main menu items must be linkable documents, with content and a template.
The submenus are preceded by a little snippet that determines if there will be any submenu items. If there are, it displays a menu header.
You will most likely want to replace the text in the template with chunks containing your own content. It's better to use chunks and keep text out of the template, not only to keep your template code clean and obvious, but also so you can use the same chunks of content in other templates and only need to make changes to the chunk, not to every template.
