Learning to use grasshopper generally requires a brief introduction and then its up to you to experiment and adapt example files that are shared.

Wire Frame Example File

Glulam Frame Example File

Voronoi And Delaunay Column Positions Example File

Karamba Example File

I have a playlist of useful videos on youtube.

There are more Kangeroo Example Files at GitHub.

There are more Karamba Example Files on their website.

Examples for Honeybee and Ladybird on the Hydra website.