how to use this ajax library ?

[eluser]sasori[/eluser]
hi, i need some help, can someone tell me how to use this ajax pagination library ?

Code:

http://codeigniter.com/wiki/AJAX_Pagination_with_CI_Pagination_Library/

all I understand is the instruction says
"put in system/libraries"
after that whats next ?
sorry for this question..am still a noob at using this CI framework and in php coding