I've seen many people coming with questions about showing and hiding fields in component edit dialogs, based on user input. Well I've written a tutorial to explain hoow to do it using Coral 3!
Here it is: https://levelup.gitconnected.com/aem-conditionally-show-or-hide-fields-in-touchui-dialogs-with-coral...
I hope this can help people
Thanks for sharing the knowledge and contributing to the AEM community.