Hi, I’d like to learn golang. What (free) course do you recommend? (I know c++, c, java and a little bit of python, batch and bash)

I wouldn't quite call it a course, but the "Tour of Golang" is pretty good: https://tour.golang.org/welcome/1

[Go in Practice: Includes 70 Techniques](https://www.amazon.com/Go-Practice-Techniques-Matt-Butcher/dp/1633430073) [Go By Example](https://gobyexample.com/) [Effective Go](https://golang.org/doc/effective_go.html)