Automatic products imports from supplier via XML DATA FEED

Message: We are looking for a functionality that would enable us sync our entire inventory with those of our suppliers via xml data feed. Basically we want to be able to automatically import their products, images, quantity, images, attributes into their specific categories from our suppliers websites using their xml feed api without having to scrape and upload manually. Please how can one do this with magneto? I understand that there are a few xml extensions out there that can enable us do this like magmi datapump, but there aren’t any video tutorials out there.