Submitted by SitePoint » While it certainly makes no attempt to constitute a complete guide to the Ruby language, this tutorial will introduce you to some of the basics of Ruby. We'll power through a crash-course in object oriented programming, covering the more common features of the language along the way, and leaving the more obscure aspects of Ruby for a dedicated reference guide. I'll also point out some of the advantages that Ruby has over other languages when it comes to developing applications for the Web.
Very nice tutorial for beginners.