As newcomber i did my best to gather information from the arduino page: I followed just about every link there is, eager to learn as much as possible (while waiting for my first arduino to arrive by mail

Now I see that some information is really difficult to find. Only after asking about fast I/O I heard something about ports. How could I overlook that on the 'reference' page? -- but, no, I still can't find it! Only after asking Google I found
http://www.arduino.cc/en/Reference/PortManipulation.
Doesn't 'reference' suggest some degree of completeness?
This information is very interesting for me, but how was I supposed to find it from the arduino page? The best documentation is useless, if people do not find it.
Maybe there's a lot more on the arduino page that is not well linked. Or maybe it was my blind spot?