The TITLE of your post is hyperlinked automatically in what is called a 'permalink'. Once your post is published, if you click on its title, just that post will display in your browser, and you can disseminate its URL to enable others to locate the post on the Web.
Tags (here called 'labels') are important to the social networking aspect of blogging. Since they will appear on your blog, you can Google them to locate other content using the same keywords. Technorati (http://www.technorati.com) analyses blogs more thoroughly and will report on other blogs using the same tags as you do.
Once you have created a post, you can save it as a draft if you wish, but in order for others to see it, you must PUBLISH it. You can always go back and edit it later.
