Hey, Scott here.
You probably found this link from an iNtuitive Musician YouTube video. Since that video’s release I’ve moved to a new site: WhatType.com.
You can find information for beginners here: Myers-Briggs Beginners
and you can find information about the cognitive functions here: The Cognitive Functions
You can also find a library of lessons from beginner to advanced and a lot more here: WhatType.com Members