Jak ustawić link do pliku, który nie jest w tym samym folderze HTML

Within the same folder, just use the file name:

<a href="theFile.html">my link</a>

Within the parent folder's directory:
<a href="../theFile.html">my link</a>

Within a sub-directory:
<a href="theSubDirectory/thefile.html">my link</a>
Tired Tortoise