If you are looking to learn Microservices in .NET Core or .NET 5 then this post might hep you. It provides a list of best online courses on Microservices using .NET Core.
This tutorial focus on how to setup a RabbitMQ environment for Microservices with .NET Core. It also goes through basic commands and functionalities in RabbitMQ which are needed while being used in a Microservices project.