Due to the poor documentation they are unable to know exactly what everything is. Which is in part, the fun of it.

On the other hand for the player who likes to know information it is readily availiable (and more coming every day) here on the forums.

Ceremony's Walkthrough and Strategy Guide (Yay Bruce)
Saber Cherry's Newbie and Technical Guide FAQ (Don't eat the paste!)
My Magic Item Reference (I'm one dope motha)
Sunray's Dom2 Library* Including all National Units/sites (except Ermor, because Ashen Empire and Soul Gate are mind numbingly boring, will be done later tonight, yay Sunray!)
Darryl's Online Spell Grimoire ("This is my brother Darryl, and my other brother Darryl", Yay Darryl!)
Gandalf's Web Directory of Modding/Map Editing Stuff (I just point people who want to learn how to mod of map edit there, Yay Gandalf)

As you can see NTJedi, there are a few gaps that a newbie can find at least some information for their desires. The only thing stopping them is knowing about them.