Whilst learning it is best to use the Blender version in the course.
This will help negate any potential road blocks with Blender’s UI, settings or behaviours.
Leaving you stress free to learn the core knowledge of 3d CG.
Try to remember your primary goal is to learn 3d CG skills and concepts that are transferable between different 3d apps.
Blender is the app you have chosen, which is why getting to grips with the Blender Basics and Fundamentals are the best courses to start with.
The latest blender versions are best kept for your own projects later in your Blender journey.
Not that you couldn’t or shouldn’t use the latest Blender version, but the more experience you have with Blender the easier following any course/tutorial with the latest Blender version will be.