I produced an 83 lesson Drupal 9 course over at OSTraining that has one resource that people really seem to appreciate. It's called the Site Building Workflow. It's basically a "best practice" workflow I based the class on.
Well, here it is... (right click to download)
I teach people how to build websites in Drupal (https://drupal.org) about 1/2 my working life. (See Most Comprehensive Drupal Course and 3,000,000 Views)
I've used a tool from Acquia (https://acquia.com) for almost 10 years now. They finally EOL'd it last summer and it stopped working this week.
My Drupal 8 Beginner Tutorials course on YouTube just hit 3,000,000 views! What a privilege to share Drupal with so many people!
I travel all over the United States teaching Drupal. I suppose I should have kept better track - but the number of students is around 800-900 over the past 9 years. I love teaching people and seeing the "light come on over their head".
Here's the link to the course: https://www.youtube.com/playlist?list=PLtaXuX0nEZk9MKY_ClWcPkGtOEGyLTyCO