I don't know much about torrents either so I'll step you through the mirror.
1. Go to this website
http://www.the-gaffa.co.uk/
2. To the right hand side click on register
3. Follow the steps to register your account and log in
4. Once you've logged in click on downloads
5. Click Patch 8.02 Mac
6. Click on the little folder icon next to Download file
7. Next to download click on the little image to the left. When you hocer the mouse over it a little message will appear over it with "download file" written in it.
8. You will probably get a security warning from whichever Internet Explorer you are running, click on that and select download file
9. Click save and select the location you want to put the file in