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Up loading PowerPoint fie

can I upload PowerPoint presentation file to the psychopy? and my participants can display??

No but you could export a PowerPoint to images and present them in a loop.

You mean I can deal with each Powerpoint slides as images ?

Is there any live virtual classes or courses where I can attend to learn? please
even if it requires fees

This is the official workshop page: https://workshops.psychopy.org/

There are lots of YouTube videos. I’d be happy to produce one specifically for presenting PowerPoint presentations (e.g. with right arrow to advance, left arrow to go back) for the cost of a “Fix that bug” (£50) from my BuyMeACoffee site.