3
You should have a ftp address with your site.
it will be something like: ftp.websitewelcome.com and you will need your user name and password, and of course an ftp program, Filezilla is good and free
http://filezilla.sourceforge.net/Then all you do is unzip your tutorial mod onto your desktop, use your ftp program to navigate to public_html/Xoops/Modules then drag your tutorials folder into your modules folder and let it upload.