The Basics of the Divi Builder
Access the Divi Documentation page for in depth explanations about the Divi Builder and it’s building blocks; sections, rows, columns and modules.
In particular these pages are very useful:
An overview of the Divi Builder
For a quick introduction, watch these videos:
The Visual Builder
Here you’ll find information on how to use the Visual Builder in Divi.
This video gives a good overview: