Preparing for the ASQ Six sigma exam

I am planning to give my ASQ Six Sigma Black belt exam this September or November, depending on how my preparation goes in the coming days. I came across Six sigma course on EDX by TU Munich, it would be really helpful if you could tell me if their course is aligned with the ASQ BOK and how well it wwould help me for the exam and preparation. AAnd any other tips would also be really appreciated. Thank you.