Newb Torrent question

New to the torrent thing and have a few questions.

  1. What are the best torrent sites?

  2. Is there a difference between utorrent and mininova? If so , what are the differences and how do they work?

  3. Any info on this would be helpful.

Thanks

Also depends on what you are looking for.
For certain content there are specialized sites, whereas there are more general sites that have a lot of many things…

I am looking for a variety of things. What are the some of the best sites and what are they good for? I just don’t want to use a site that is problematic or rarely used.