What kind of information and resources can be shared through a LAN?

Gee, I love the 'easy' questions.

The fast answer is: "Anything".

The long answer is, basically ...anything. But seriously, you can share data files, access to printers, scanners, other terminals, even access a supercomputer over a network.

You can store your recipies on a hard drive in someone else's PC in Singapore while you are working at home in Los Angeles, you can access a Beowulf clustered supercomputer at the university from your wireless in the bathroom, and have it perform vertex shading operations, while having a poo.

Which answer did you like better? - have fun.