Questions about Torrents.

So, this is my basic knowledge of what I think a torrent is.

A torrent is a program for recieving files. all it really does is save the files completed location so if your internet is disconnected then it can resume where it left off. Am I right about that?

Also, I am using BitTorrent. And it slows my comp down horribly. Is there a better torrent program that wont suck my bandwith and memory in like a bottomless french whore?

Thanks ahead of time if you actually answer my questions in a usefull manner.

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