Tutorials for Illustrator

Here are three illustrator tutorials that I found helpful:

1) http://www.dezinezone2002.com/tutorials_ill_inter.htm
2) http://www.peachpit.com/articles/article.aspx?p=483795
3)http://www.bittbox.com/illustrator/illustrator-how-to-make-custom-swooshes-swirls-and-curls/