Hi there, thanks for your question.
USB cameras are very easy to use nowadays, and often all you'll need to do is plug it in to start using it.
Many webcams have software provided by the manufacturer, for instance Logitech or Microsoft webcams may come with a CD or download link to install their software. I'd recommend installing the webcam software to fully utilize its features.
You can find Microsoft's webcam software by searching for your model here:
https://www.microsoft.com/accessories/en-au/dow...
If you have a different brand of webcam, you can search on the manufacturer's website for the software. Once installed, you'll be able to use the webcam and its features.
Hopefully that's the information you need. Please let me know if you need further assistance. Thanks!