All learning projects give me "The type or namespace 'Unity' could not be found"

Basically what the title says.
All learning projects give me "The type or namespace 'Unity' could not be found. Are you missing an assembly reference?".
Any ideas what could be going on here?

If I double click the error message, the indicated line is:

using Unity.InteractiveTutorials;

I installed Unity with the default settings.

 

Make sure, you use same Unity version, as tutorial suggest.
Otherwise you will run into issues.

 

Where did you find the interactive tutorials? They are no longer available on the Hub.

 

Yeah, I just read that.
I was installing using a Unity 2017 installer and the tutorials are probably for the latest version.
Thanks!