Blender has a benchmark page, and there are numbers all over the place, you can't tell what's a real benchmark.

These videos show people rendering using a 3070 etc., and you can see how long. 

Inspiration

This guys planets look awesome.  Sam Krug  He has some details on how he did these in blender also.

Reference

Here is a great reference of a spaceship done right.  Notice the details that give the ship a sense of scale, the running lights, the spotlights, the nurnie shapes.  The shot with pool window tells us something about the size, we know how big pools are.  The planet looks good and they have a lot of the blue atmosphere at the edge of the planet.  The rings are weirdly placed but look good.  The pod thing has great heat effects, and that's good compositing.

Beginner

Basic modeling of a dinosaur.  Using a template.

Beginner

What is a render farm, and the types?

Talks about crowd rendered Render farms.  (like sheep it)

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.