You should have a working knowledge of Drupal 8 and have written (or looked at) module code. Having some basic object oriented PHP experience is also a must as I'll be going through some code examples containing objects.
Using the service manager is an essential part of a Drupal 8 developers toolkit and understanding it not only helps development, but can also allow you to create modules that can be easily used by other developers. There are numerous code examples out there that talk about using this or that service, so I'll look at how to go from "\Drupal::service('thing');" to finding and using services within Drupal 8. I will look at creating custom services to use within your own modules and provide injectable dependencies for other modules. I will also show how to override services to provide your own functionality to existing services. All code shown will be real examples that you can take away and use in your own projects.