While just getting started with the cracking open, several themes become obvious. The iBook contains lots of plastic parts and lots of screws. By the time I am done there will be over 50 loose screws and several more will still be left that I didn't see the need to remove.
Apple hid the upgradeable parts, what few there are, under the keyboard, which just pops out of its housing.
The first thing to come out is the PCMCIA AirPort WiFi card. Under it is a metal plate held in place by two screws. Under that plate is the RAM. As you can see here, the original owner upgraded the amount of RAM in her blueberry iBook. The long yellow connection below the extra RAM stick is for the keyboard.
Photo by Mark Kaelin/CNET Networks