Oh, well...that much is easy.
Get AZUREUS and install it...internal settings will organise a file all your stuf goes to. Then find a site that has torrents (you could google torrent+whatever), or go to
www.isohunt.com or
www.torrentbox.com , find what you want with a search or in the "latest" lists, click download it or whatever, and your program (azureus, or whatever other torrent client you get) will open up automatically and ask if you wanna download the file...other than that theyre just normal kinda files you'd normally get.
But...yeah...I don't know any good places for movies or tv shows specifically, and pc games are a bitch too.
If anyone could help out?