Modelling and PowerPoint Courses - Recommendation Needed!

Hi all,

I'll be starting in a few months a six-month off-cycle internship (if Covid-19 won't kill us all) at a BB and would like to come as sharp as possible with my technical skills. I never did any real finance internship, I know only basic Excel and never worked with PP. Please help me with some recommendations as I'm lost with which of the two main courses available to choose.

Thanks a lot and stay healthy!!