Views Ticker missing views, what are views and where can I get them
Modules sometimes have dependencies on other modules.

The Views module is one of the most used modules in all of Drupal that isn't a part of Drupal core.

Generally you can find your missing modules by going to http://drupal.org/project/[name]. This is not always true as some modules is not a single module but multiple modules. Views is one of those modules, that has a core module called Views, and an UI module called Views UI which is used to create the interface for setting up views.