How To View Left And Right Columns On Each Page?

how to view left and right columns on each page?

Depends on your design/layout.

If you created a new web application with yiic you can simply edit the file protected/components/Controller.php and change the attribute "layout" to "//layouts/column2"

public $layout='//layouts/column2';

In protected/views/layouts/column2.php you may edit the sidebar behavior / content.