[Javascript] jQuery

[Del Wegener]

Good Morning;

Is anyone familiar with jQuery?
Do the jQuery library items need to be installed on the server or are they 
just included in the HTML directory for a website?
Is it easy or hard to learn?
Is there a significant gain?
Can animations be done with jQuery?
Can graphs of mathematics functions and equations be produced?
Is there a good website that gives an understandable and non-technical 
overview of jQuery?

Thanks
Del
del at delweg.com