This is a two part tutorial on how to read values from Excel into Grasshopper. » Grasshopper – Reading Values from Excel: Part 2 Ben Coorey
Virtual Shape Research
The second edition of the "Essential Mathematics for Computational Design" is now available with free download Essential Mathematics uses Grasshopper to introduce design professionals to foundation mathematical concepts that are necessary for effective development of computational methods for 3D modeling and computer graphics.
Rinus Roelofs - Rhinoceros