Ready to unlock your true Symfony 6 potential... to be able to take on any task, because you understand how things work under the hood??? This is the tutorial for you. We attack what's at the core of Symfony: services, config, environments & environment variables. These are the tools you'll need to take on any challenge with Symfony
What you will be learning
Hello bundles! Bundles give you services
Installing new bundles
Finding and using services (including debug:container)
Configuring bundles (i.e. configuring services)
Creating your own services
Autowiring & binding custom arguments
Symfony Environments
The magical configuration loading mechanism
Service parameters
Environment Variables and .env
Secrets vault management
Autoconfiguration
Bonus: MakerBundle!
By the end, it's true! You'll understand the fundamentals behind how any part of Symfony works. Need to use a new feature? You'll be ready!
Homepage

https://symfonycasts.com/screencast/symfony-fundamentals