Ok... since I'm feeling generous:
You double-click on the file in the search window and then wait. Leave it running 24/7. Expect to wait a few hours before anything starts and when it does don't expect it to be fast.
Choose files with high availability (ideally 100+ sources) and high %complete.
Make sure you are connected to vaild servers:
http://www.gruk.org/list.php
Connect to Razorback2.0 or Donkeyservers and ensure you have High-Id (Servers/My Info). If you get Low-Id or 'server is full/dead' then read the manual and sticky guides about Low-Id.
Set UL Limit correctly (approx 75% upload bandwidth). When correct you should see a straight line on the statistics upload graph.