Lidar Scanning you can scan objects or scenes.  

Beginner

Intermediate

Derrk Uses particle systems to grow  grass on any object.  Has some links to free grass objects, and car.  (Geometry nodes also allows this and Uses nodes to place objects.)

History of the Graswald Plugins. Talks about how to use low poly objects to populate your scenes. Plan your geometry to be efficient. Talks about his workflow in creating plants. Photos etc. Creating the textures, create the models, something he calls the planning cycle, (nice idea)between the planning and creation of objects. For someone so young, he has lots of wisdom.

Collections is important For organization and provides a way to animate multiple Shots in your Scenes a little easier. You can also use instances and Collections to save modeling time, and have faster renders.
 

This plugin has lots of cool features to explore. Get Machine tools here. Version3

One is the align tool, with the hot key of  Alt A.  To simply align two objects together.  Why isn't that in blender?

 Animation Nodes in Blender 2.91 (Install and first steps) - BlenderNation

This is a free plugin.  Blender is making an everything node that does some of this nodes functions

Beginner tutorial