Follow this 8-step tutorial to learn how to open a project in Brackets and use the Live Preview feature to work on your A-Frame scenes.
Unzip the downloadable source code folder of any workshop challenge in the Workshops Resources.
Open the unzipped source code folder from the Brackets Sidebar.
Select the unzipped source code folder (or your personal project folder).
The project folder has now been loaded in Brackets.
Double-click on any HTML file.
Launch the Brackets Live Preview.
Make sure the Live Preview is working.
Double-check that the Live Preview is always ON (when OFF, you will need to refresh the browser window to see the changes in your scene).