Accessories needed to connect to the web?
What do the parts look like that connect this ancient laptop to the internet provided by the cable company?
You'll need an AAUI to Ethernet adapter. You can find an official Apple adapter on eBay, or a generic one for less. These aren't terribly difficult to find, but aren't common enough to find in a local parts store.
Method 1: You'll need the Apple PC Card Cage and a PC Card compatible with Apple's Airport card (to make it easier). The PC Card Cage is very hard to find and expensive if you find it. An ORINOCO PC card is relatively easy to find and cheap.
Method 2: Using the AAUI to Ethernet adapter and a Ethernet to WiFi adapter. You can find a battery-powered Ethernet to WiFi adapter, but all these adapters won't make it easy to move around.
Frankly, I think its safer not connecting to the internet.
This systems OS has quite a few security holes, sadly you can't upgrade it.