I am just learning blender and am using a tutorial that explains group nodes. It must be made in a previous version since my software is not working the same way. The tutorial explains that when grouping nodes in the node editor, a 'group node' input is created that allows you to connect specific attributes that can then be modified on the group level.
The display I have creates a group but does NOT have any sort of Group node input available that I can see. I understand that the group nodes have been totally redesigned in v2.77 so can anyone point me to information on how to use the group node input feature in this version.