Using Map Levels
At first look you might think you won't use Map Levels, but they are actually really helpful. They let you split your websites into sections, much as I have done on this site. Having these sections lets you have sub menus like the one on the left, and the pop out menu on the software skills button (on the Software pages).
Levels can also be used to create menu items or "buttons" for pages in different sections of your website, or even pages on completely different sites.
The video walks you through how to create levels