Sounds like you’re just starting out. If you’re not yet familiar with Linux there’s a lot guides out there to set this up & it won’t take take long. It’s when things go wrong it can be frustrating as it possible there won’t be a guide for your specific issue & it can be time consuming to figure it out.

You could start just using windows if that pc came with it. It’ll enable you fast track the fun of building & populating the media server.

Over time you’ll discover the limitations of windows, start researching the alternatives & have plenty of time to pick something else while enjoying what you’ve already setup.