How do I let users be able to view, update and delete their own content? I want to let users view a list of their own content and also be able to edit or delete them same as "/admin/content" page.

However, giving access to edit and delete their own content can be achieved using Node Access Rules or setting the access to user type at Permissions tab.

Thanks for the help.
You can use Views. Create a view of content on your site and use table format, list the fields as listed in admin/content. Add a relationship to the content:author so as to get access to the user table. In contextual filters (arguments for drupal 6), add user:uid => provide default value => user id from logged in user. Add a page display to your view and optionally provide a normal menu entry (or do that with the menu system) and Save your view. Go to the page you created, you should see only the content you created. To be able to mass delete or perform other bulk operations on the content, use Views Bulk Operations