The Grasshopper Primer (EN) 
A tutorial guide on „how to grasshopper“:
Here you will find some basic information and examples for your first steps in Grasshopper.
grasshopper3d
Grasshopper forum.
food4rhino
Rhino/Grasshopper plug-ins.
A tutorial guide on „how to grasshopper“:
Here you will find some basic information and examples for your first steps in Grasshopper.
Grasshopper forum.
Rhino/Grasshopper plug-ins.