Ryan covers how to use the Project Config feature to easily migrate site settings (sections, fields, volumes, etc) between environments. At publishing time this feature is only available on Craft 3.1 Dev Preview.
Some stuff to help you along during the lesson:
Invest in yourself, your career, and your ability to take knowledge and use it grow your business or earning potential.
Get everything in the catalog plus new videos every week. Just by signing up you get immediate access to hundreds of hours of learning.