This is the Frequently Asked Questions section of this site. It is divided into several separate pages:
Tags are nothing more than simple text labels which are attached to content posted here. They are designed so that people may easily find, and link, related content together.
When you are logged in you simply click upon the "Add New Tag" text when it is offered and you will be able to add a new tag.
If you're contributing an article to the site as part of the submission process you may also add tags which will be used when the article is promoted to the front-page.
Every tag used previously is listed in the tag cloud. This shows all the tags which have been used at least once, and shows the most popular tags visually.
Yes. If you view the tag cloud you may select a single tag from it.
Upon the tag-specific page you will see a link to subscribe to a feed of articles which contain that tag.
For example you could subscribe to the apache2 tag feed.