If you are a Premium learner, then you can simply switch from one language to the other.
Click on the flag on the top left corner, and select the language you want to start or continue learning.
If you don't have a Premium subscription, then you can only learn one language.
If you have just registered and selected a language by mistake, let us know at email@example.com within the first week of registering, and we can amend that for you.
Once you have started learning with a language however, we won't be able to change it for you.
If you want to learn more than one language, why not upgrade to our Premium membership!
More information about all the features you would have access to here: https://www.busuu.com/en/premium#premium-why-upgrade