I need to install Plex on win10. But I do not know much about this part?
Plex Media Server or Plex Player?
I’m assuming you’re talking about Server itself. In that case, just head over to Downloads section and click on the download button under Plex Media Server.
Proceed with the installation including where you want to install it on (default is on drive C), login and you’re done.
To view your Plex Server (including the library, settings etc…) just use the browser, and enter your local server IP (it sometimes defaults to http://127.0.0.1:32400/web).
You can just type http://localhost:32400/web if you’re on the same PC.
Or type http://[Enter your plex server PC ip address]:32400/
an example would be “192.168.1.1:32400/”
you can get your local plex IP address from your router.
refer to this Article for support.