Website Development

What is the best choice for website development, CMS, and Yahoo Web Hosting?

I'm new to web development and I think the construction a website for small businesses. currently using Yahoo Web Hosting. I need to have multiple authors (who has no knowledge of HTML), so I'm looking for easy to use CMS that is easy to implement with Yahoo Web Hosting. Any ideas? I personally know HTML and can build site, but other authors have any knowledge of HTML. Thank you for your comments!

WordPress. Yahoo! offer it as part of their hosting packages.

PHP & MySQL Web Development – Part 1