If you want to use grid now, what should you do?

I think you first define the grid in CSS, then assign elements to it.

What's the difference in naming rows/cols vs grid area?

Next:

Determine if it's viable, look up how to fallback, find a tutorial.

Learned about rest modules in D8.  Want to learn how to work with the API from another application (angular or react, etc).

Next steps:

Configure this site, install postman, and create a basic app to authenticate and push/pull content.

Working on Bundle Fields module.

I learned about namespaces.