Tutorial - Attractor Points

Source:
http://designreform.net/2008/06/grasshopper-david-ruttens-s-shift-tutorial/

Ive decided to change my tutorial to shifting, the shift modifier will move all the values in a list a number of indices to the left or right. This tutorial i might use in relation to my theme of "waves", to present the way of how the form of the wave is acted upon internally.

Source: http://designreform.net/2008/07/grasshopper-patterning-with-2-attractor-points/

This is a posted tutorial on how to use attractor points, unfortunately i couldnt get the embedded code for the video so i have the page source used as a link.
With this tutorial im planning to use these points as a basis to my project, there are some things that dont quite come together, but further more attractor points is more to be researched upon.