Powerpoint Presentation

I’ve been using Powerpoint for years, so I’m really looking for something at an advanced (not an intermediate) level.

I am working on a powerpoint presentation for my class and I need urgently to download the youtube program for free to I will be making a video of my presentation, if anyone can help me, I need this information, please.

I am doing a powerpoint presentation for a college course and it has to be 20 minutes. I have not used powerpoint very much and do not know how to a timed powerpoint. Any suggestions would be greatly appreciated. Thank you.

Everytime I try upload my powerpoint presentation, it doesn’t upload correctly, and it says “Invalid File,” What do I do?

it is a powerpoint presentation in geographic information systems and I have the first slide. there are three other people in my group. would I introduce my self first or lase seeing as I am starting with the first slide and would I say something like today were going to talk abour geographic information systems and start the slides? and were the second group to do out presentation, we have to go right after another group.