Didn't I tell you this stuff before?
Bitcomet is the program I use. No problems with it yet.
Piratebay is ok, but I like torrentspy.com and mininova.org a lot better.
I really only get video or music files, so look for the .avi extension on videos. .rar, you open with WinRar(free). This is usually programs but can be videos.
DivX player is my favorite media player for .avi's.
For .bin and .cue, (more common with bootlegs) use VLC player or Nero Showtime(not free).