The Cyber-state--you can call it the Web, the Net, Cyberspace, or the Electric Boogaloo, it's the network space that connects computers and information in the near future. The Avatar--that's the representation of your character as that character surfs the spaceways of the Cyber-State. The Toolkit--this gives you options on how to represent that Avatar in the Cyber-state. The abilities, class, and skills of the Avatar can be built using one or more of the options from the Toolkit.
Because when your character is crackin' into the big evil corps' network, she wants to look cool doing it.