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?

Insipration

Well, interesting to note, This guys shots are movie level quality.  He's using compositing for sure with the different layers of background, mid ground, and the street with the cars.  Sort of reminds me how lucas had the motion control rigs to shoot the different elements with the same camera motions. 

 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

Sculpting in blender is like zbrush.  People have sculpted fantastic things in Blender.

Beginner

He Goes over the tools in the blender sculpting tab

There are other programs out there that are just as powerful as Blender

Other Programs Helpful Websites:

If you use photoshop for textures, Colorgrading or whatever than the websiteplanet.com website has great links to free Plugins and filters. 

Here are 5 ways you can make a wireframe of your mesh.  I made a wireframe reveal for the Digitaltreats.com logo here.

Beginner

1. You can use the wireframe node material in shaders.  Use A mixrgb node and  Use an emission node to make the wireframe glow.  Turn on bloom in the Eevee settings.

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I made this Animated logo in blender.  I used one tutorial to to make the glowing Reveal.  I could of used the wireframe node for the wireframe, I used a image map of a grid instead and a modified metal texture for the chocolate.

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I made this image using 3 different Tutorials.

I used this one from Just the basics for the rock textures.