How do I change the language of explanations?

The language of explanations is set when you initially add a course. To change it, you need to add the course again:

• Go to the Profile tab.
• Click the "+" button to add a new course.
• Select the language you want to learn.
• Next, you will be asked to select the language for the instructions. Pick your desired language for explanations from the available options.

This will look like a separate course, so make sure to choose the language level as well.