How does Thunderbolt 3 work?

Hi. I want to buy this laptop with Thunderbolt 3: https://www.alternate.de/MSI/GP66-Leopard-10UH-263-Gaming-Notebook/html/product/1712577. I'm now wondering how that works with Thunderbolt 3. Do I have to plug a USB C hub into the USB C port and then plug everything into the hub? I don't know anything about that and at the moment I'm completely clueless.

And to use thunderbolt, you also need a thunderbolt hub. You can also use USB-C hubs, but they don't have the same performance as a Thunderbolt hub. Thunderbolt only uses the USB-C connector.

What are you going to do with Thunderbolt?

I would like to connect several USB devices such as the mouse, keyboard and cooling pad, but also my monitor via the display port, if that works at all.