Fear of powerpoint presentation?

I have to hold a GFS in German with Powerpoint can someone tell me how I can if I have it on the USB to the laptop from the school can connect and the presentation should be 10 - 15 minutes my only 7 minutes is the problem dadran is me I just can't find anything about Wolfgang Herrndorf you think that's a problem I'm in the 8 class of a junior high school it's my first GFS.

You have to plug in the USB stick and the USB plug then you have to open your files PW and then quietly present, speak slowly and loud