tutorials

These are the ones that I like in Santiago's link

http://www.lynda.com/home/Player.aspx?lpk4=40109

http://www.lynda.com/home/Player.aspx?lpk4=40108

http://www.lynda.com/home/Player.aspx?lpk4=40105

Moreover, this link is also a good one

http://www.blog.spoongraphics.co.uk/tutorials/beginner-illustrator-tutorial-create-a-vector-rss-icon