Basically, views need corresponding controller actions. So the main index action (located, for example, in application/controllers/IndexController.php) would need a corresponding view at /application/views/scripts/index/index.phtml.
example: To reach an action within the Index Controller named fooAction() you would need a view file at /application/views/scripts/index/foo.phtml.
example: To reach the index action of contact controller you would need the controller at /application/controllers/ContactController.php (with an indexAction() inside it) and the view at /application/views/scripts/contact/index.phtml.
Getting beyond the absolute basics... view rendering can also be turned off or redirected but that is getting beyond the basics. Also if the app uses Zend_Layout there will be a layout file located somewhere like application/layouts/scripts/layout.phtml
Clear, concise and current ZF info can be strangely hard to come by. For tutorials check out:
- The ZF Quickstart
- Rob Allen's tutorial
- Some screencasts
For adding feeds I suppose you should check out the framework's documentation for Zend_Feed