I know the article has been out for a while, but it’s worth reading through: To Hell With Bad Editors.
A well-felt article on the damage done to the web by (particularly) WYSIWYG editors. Read it even if you use a WYSIWYG editor and you’re convinced you’re doing the right thing.
Oh, and if you are so inclined, CodeBitch has written a few lines about the aptitude of human beings to learn HTML. Yes, I have what you need: HTML Express tutorial.
Happy coding!