What is the difference between a blog and a web page?

A blog is just a special kind of web page in journal format. A blog makes it easy to make entries in your web journal (aka "weblog" or "blog" for short). You just type in your entry on a form and click a button to have it published to your weblog. You get the nice formatting, date/time stamping of the entries, a comment system, and "trackbacks" (which are links in your weblog that link to entries on other weblogs that reference yours - was that clear?) automatically. There is also a thing called an RSS feed, that you also get for free, but I won't go into what that is now.