To change your homepage on Microsoft Edge, you'll need to head to your browser's startup settings page.

Purchase a new domain name from your existing registrar, or use a new registrar. If you decide to use your existing registrar, call to ask if the registrar can handle the transfer of all your files ...

You can edit the hosts file with any text editor. There are a variety available, but both Windows 10 and 11 come with Notepad ...