An introduction to weblogs
This is an excellent series (two articles) by Diego Doval on starting a weblog. The articles have many links and resources that you will find helpful.
This resouces provides information and links on blogging.
Blogging 101 #2
This website is dedicated to helping the beginning blogger. This site has a list of blogging resources that you might find helpful.
Blogging 101 #3
A presentation on blogs and blogging. This site is meant to be an overview of the development of weblogs and an introduction to the ways you might use a weblog. The page on blogs anatomy is helpful as you take time to plan your blog.
This wikibook about blogging has a wealth of resources for bloggers. (Wiki has been spammed)
Tour of the Blogosphere
This site is a session of general orientation towards what blogging is all about, and a quick and easy guide to starting your own blog. The session was a part of BloggerCon held in October of 2003.
Blogging 101 Resources. Includes 101 writing tips.
Blogging 101 #4
This lens explores the basics of blogging and is part of my ongoing effort to educate people about new web technologies. Includes a list of blogging books.
Why I blog
From Ted's Take