The latest and greatest Grasshopper Primer, the Third Edition, can be downloaded for free from Modelab:
http://modelab.is/grasshopper-primer/
I’ll be assigning readings and example exercises out of this primer for the next month or so. Check out the updated Syllabus for details, and get your hands on these great resources as soon as possible!
I’ve been using the second edition in every section of Parametrics I’ve taught to date, and we have always struggled with the dated content. I’m excited to dive in to the latest and greatest from the boys over at Modelab with all of you!
Parametrics 