mdesign,

There is no convert surface to points node, instead you first convert surface to isoCurves then convert these to point arrays as shown below.

It is important to note that this will only work with surfaces bound by 4 edges.

Hope this helps...I look forward to seeing what you get up to with NE.
Please don't hesitate to asks for help if you get stuck.

James
https://www.instagram.com/nodeology/