always look for the comments that other people havve made regarding the torrent you are downloading.
A seed is a client that has a complete copy of the data of a certain torrent. Once your BitTorrent client finishes downloading, it will remain open until you click the Finish button (or otherwise close it). This is known as being a seed or seeding.
A leecher is a client that is currently downloading the data of a torrent. A leecher does not have the complete file, otherwise it would be called a seed.
If downoading RAR archives, you need to install WinRAR or 7-Zip to extract the data of the files. WinRAR can be downloaded from the WinRar website
, 7-Zip from 7-Zip.org