Try Ruby: Step by Step Online Ruby Tutorial

Now I pretty much make a living off my knowledge of .NET based languages, C++, C, and a handful of other programming/scripting languages. Which means I tend to look at other programming languages but don't really use them to often. Which brings me to this awesome little tutorial site that walks you through the basics of the Ruby programming language. However, this isn't your standard tutorial guide, this site has a nice little command prompt interface that allows you to practice the code concepts that are being explained. The site has 8 tutorial sections that are pretty straight forward and useful. I can't really describe this any better so your just going to have to see it for yourself, check it out here.