Before you proceed any further, take a moment to make sure you comprehend these concepts that are required to continue.

1) Make sure Grasshopper is working on your PC or Mac

2) Make sure to have the Bifocal plugin installed and ready to go

3) If you use a Mac do not forget to use CMD instead of Ctrl, so to group you will use CMD + G etc

If you have questions about this chapter 1, please let us know as well as if you want to share your work with us, that would be great too.