Part of the reason that it has zero familiarity is that it changes so often that memorizing a "path" through Facebook to a place you like to go is totally pointless. In fact, the constant change is the whole point of Facebook. The default page when you log on is your news feed, so even when the site itself isn't changing, the content is.

It's like trying to remember how to navigate through this: http://images.funagain.com/photo1/huge/00069.jpg