i'm not sure if this in the right spot but can someone tell me What is a .torrent file? and how can you open it? thanks

I have a torrent file which when i start downloading it never actually starts it sit's theer open just idle and gives no error. I am using Bittorrent and I am behind a firewall; Ieven tried opening the mentioned ports on the firewall but no luck; Please Guide

Thanks.

What the seed and peer in torrent?
What it's mean that show the seed and peer like this

For example:
Seed : 6(14)
Peer: 7(12)

Help to explain
Thanks for explain