Grasshopper Learning Resources
In order to get better at Grasshopper/parametric design my suggestion is to focus on a specific goal - rather than just starting to learn in a more abstract way.
Whenever you face a problem, you can search for solutions using the forums (the new one and also the old one - check the links below) or look for specific tutorials.
Working on a practical case will help you keep your focus and with time you'll be learning the foundations as well. I personally find this is a very good approach.
- Free Webinar: Introduction to Grasshopper for Designers
- Free Webinar: Designing 3D Patterns with Rhino and Grasshopper
https://discourse.mcneel.com/c/grasshopper (new forum - this is the best place to ask questions)
http://grasshopper3d.com (old forum - there is still a lot of information)
- parametricproject.net (coming soon...)
- Parametric House YouTube channel
AAD Algorithms-Aided Design: Parametric Strategies using Grasshopper by Arturo Tedeschi
Grasshopper Primer Third Edition
Essential Mathematics For Computational Design