how to create a main template

[eluser]mks2013[/eluser]
I am new to codeigniter, i was finding ways to create template which will appear as a common across all views as normally we mean how template works.I followed here - http://williamsconcepts.com/ci/codeignit...rence.html but found error -

Code:

Fatal error: Class 'Controller' not found in C:\xampp\htdocs\codeigniter\application\controllers\page.php on line 3

its seems it would be CI_Controller.Anyway plz tell me best step by step template creation articles