Download torrent files using a BitTorrent Client. Just follow the steps on how to download torrent files using a BitTorrent Client. 

1. Download and install a BitTorrent Client 

Vuze-http://www.vuze.com/app 
UTorrent-http://utorrent.com/ 
Just search for more BitTorrent Clients on Google 

2. Download the torrent you want on torrent sites 

Mininova-http://www.mininova.org/ 
isoHunt-http://isohunt.com/ 
Just search for more torrent sites on Google 

3. Download the downloaded torrent using your BitTorrent Client 

Download can be slow depending on how many your seeds and peers are. Download can also be slow if you have a slow internet connection. 

4. Install a reliable Antivirus or Anti-Spyware program 

Make sure you have a reliable Antivirus or Anti-Spyware program installed on your computer because some torrents have viruses, spyware and the like! 

Warning:Some torrents have viruses,spyware and the like so make sure you have a reliable Antivius and Anti-Spyware installed on your computer. I'M NOT THE ONE TO BLAME IF SOMETHING HAPPENS TO YOUR COMPUTER BECAUSE I ALREADY WARNED YOU OF THE RISK YOU ARE ABOUT TO TAKE! 

Using The Add New Torrent Screen

After you have set the mode to Advanced the Add New Torrent window will display.  This window may display minimized at first.  If it does, you need to press the arrow in the lower left hand corner to expand as shown in image below.

After pressing the arrow, the full Add New Torrent screen will display and you will see the option to deselect files.

You may deselect the files you do not want by unticking the box next to the file.  When done Press OK.

Selecting Files to Download After Loading Torrent inµTorrent

If you only want to deselect files on occassion, then using the above will create unnecessary steps when you add a torrent.  You can deselect files within a torrent's associated content after adding the torrent to µTorrent as follows.

Highlight the torrent whose files you wish to deselect.  Best to Pause or Stop the torrent before deselecting files.

After that, go to the Files tab on the bottom part of the µTorrent screen. (If you are not seeing this, then select Options>Show detailed info and be in Advanced Mode as above).  Highlight the file(s) you do not wish to download, then right-click on a selected file and select Don't Download.

Conclusion

Using the above steps, you will now be able to select which files you wish to download through µTorrent.

If you have any questions, please post here