2 Tutorials from Discussion Forum

Generating a Spiral in Rhino's Grasshopper Plugin
http://www.designalyze.com/?p=3#more-3
This is the first tutorial that I found in the forum relevant to me as it teaches you how to make a spiral!

The second image is essentially the same as the first, but with the points preview turned off in Grasshopper so that it does not detract from the spiral itself.

Meshing Circles Into Each Other and Intersecting
http://www.youtube.com/watch?v=rWsPy7IA89E

This is another tutorial I found in the Discussion on Blackboard.

Using the tutorial I created a grid of circles and made them intersect and created a surface from that.