Help:Introduction to navigating Wikipedia/2
Searching and redirects
Wikipedia's pages are divided into namespaces. Each namespace (except the main) has a particular prefix which appears with a colon at the start of page names.
All of these namespaces, except for Special, also have a corresponding Talk namespace for discussion. So for example you can discuss the spite house article at Talk:spite house, or talk about Wikipedia:Neutral point of view at Wikipedia talk:Neutral point of view. You can switch between the normal page and the talk page with the tabs at the top left.