Torrents are another means to share files.
They are found at many, many sites. Do a little research.
You don't need a "torrent client" to get started. LW will handle it for you (though you will want to use a different program if you want more than a few torrents.)


Start LW.
Open your browser and go to isohunt.com (one of many good free torrent sites).
Search for what you want. When you find it, choose the file with the most seeds. Click "download this torrent" (will appear somewhere on the web page).
When dialog box appears, click 'open'.
Go back to LW. You should see your selected file in the downloads window.

I suggest you start with a small file, such as a song, to see how it works.

You may want to check out uTorrent. It's a bit sophisticated, but you can start with defuault settings. Since you already have LW installed, use it until you know what you're doing.