Get a 2tb HDD and download all the freeleech torrents and then seed forever. Most private trackers have a bonus system which you get for long-term seeding. Eventually you use bonus points for upload.
Work your way up on the rankings until you are high enough to get into the invite forums. Repeat the process until you get into all the top tier trackers (who never have open signups)
MTV/MAM/DDC are all good places to start