Download uTorrent from Tucows.com and install it. Go to www.torrentz.com and type in your request. The file will be save in "downloads" on windows. Sometimes the files are Tar'd, you need WinTar to uncompress and compile the files.
Also download VLC and us it as your default player.
This is a complex question. You need to have someone come over and instruct you if you are not computer savy