Don't worry guys. This is all part of Googles ongoing effort to predict user intent on past behaviour and then provide the according services.
Based on your past user behaviour Google has learned that your subconciousness had decided to take language courses and the user interface has been changed accordingly to support your learning process. Unfortunatly the changes kicked in prematurely before your subconciousness told you conciousness to sign up for the course.
But hey that is nothing new - Google presents it's users websites they do not (yet know they) want to visit all the time. So why are you surprised. Google knows what you want - before you do.