@raziel30 - You don't have to be afraid to do mistakes on PrivateHD, it's a very easy Tracker to maintaina a good Ratio. New user have to pass a very Little (not time based exam), that means you Need to upload 10-15GB to reach the normal user class, you also Need to be a member for 2 weeks, or 10 days around that to have Access to all new torrents.

Before you passed the Little exam, I would check the "home/starting" page, if you scroll down a Little bit, you will see a list of torrents with double upload counted and they are also completely freeleech (they are called Features Torrents), it's the tracker's torrent resurrection System, there usually is only one seeder left and they put it on the list to give the torrent a Little help by making it attractive for leechers and those who want to have the double upload Count Features.

It's probably the easiest way to get the needed upload to pass the Little exam, but of Course you can also download all other torrents older than 1 week, just make sure they are freeleech, large internal torrents will also have double upload counted, i think they are marked with a golden star and a green gem. behind ths's Name.