how, exactly, does one "blog"?

Wikipedia defines a blog
as "a user-generated website where entries are made in journal style and displayed in a reverse chronological order." The noun (n.) blog comes from 'Web log." For more on the history of blogs, see: http://en.wikipedia.org/wiki/Blog

(Note: Wikipedia is itself a user-generated site--an online encyclopedia that has been composed, and is continually revised, by a community of users)

Looking for blogging models for your own responses throughout the semester?
Try out:
The Science American Blog
(by the editors of *Scientific American*)
-and-
The Valve: A Literary Organ
(a blog of literary and cultural criticism; analyses of texts, novels, criticism, film, etc...)