Grasshopper Plug-In for Rhino (PC only) Info
Grasshopper Forum
http://www.grasshopper3d.com/
Installation
To install Grasshopper you'll need a version of Rhino running on a PC or PC emulator on a Mac with the .NET framework
Trial version of Rhino
http://download.rhino3d.com/rhino/4.0/eval/
Grasshopper Downloads
http://www.grasshopper3d.com/page/download-1
.NET Framework
http://msdn.microsoft.com/en-us/netframework/default.aspx
Terms
Parameter: contains data
Component: contains action (generally multiple inputs and outputs as well)
Definition
Connection
Bake