The G-Electrical Plugin has a dedicated Knowledge base, available here:
This knowledge base is divided in different sections:
Getting Started
Tips and Tricks
Settings
Electrical Schematic
Design Organization
Reports and Export
That will help you taking advantage of all the product features available.
With the same objective, you have the G-Electrical E-book “Creating Electrical Designs”, that will guide you through the product functionality, and how to use them/the workflows involved. The E-book is designed to be used without the presence of an instructor, so it is a step-by-step explained content that requires only a little CAD experience.
You can download the E-book here: G-Electrical - E-Book.pdf
In the Graebert Youtube Channel, you can also find a video showcasing the product's functionality (https://www.youtube.com/watch?v=DX3apjf49po).