Listen to these individuals to see what it's like working in the film industry. Podcasts of people in the industry. Tips, and advice on what it's like to work with people in the film industry.
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.
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.
Blender is a powerful program and if you don't have a fast enough rig, you won't be able to do the things you really want to. Forget about simulations, or large scenes.
Get 32gigs of ram or more, (ddr5 ram just dropped in price), Get a VideoCard with 12gb of vram or more, get a large M.2 drive, and an 8 to 16core Processor.