Hi dreamer, welcome to the forum and to MoI!

One way to get a quick start with MoI is to read the introductory section of the help file here: http://moi3d.com/3.0/docs/moi_introduction.htm and to watch the tutorial videos here: http://moi3d.com/3.0/docs/tutorials.htm

There are also links to other tutorials here: http://moi3d.com/resources

But probably you'll be up to speed quite quickly since you already know NURBS modeling from Rhino.

I'm glad that you like the interface and I hope it will be useful for you! Like Pilou says above, you can use MoI and Rhino in combination with each other pretty well and transfer objects back and forth between them using copy and paste.

Thanks,
- Michael