From the site:

"The Pirate Bay is the worlds largest bittorrent tracker. Bittorrent is a filesharing protocol that in a reliable way enables big and fast file transfers.

This is an open tracker, where anyone can download torrent files. To be able to upload torrent files, write comments and personal messages one must register at the site. This is of course free.

The members at The Pirate Bay represents a broad spectrum of file sharers. Therefore material that seem offensive might be available. Do not contact us if there is anything you find offensive, instead focus on the material that you find positive. The Pirate Bay only removes torrents if the name isn't in accordance with the content. One must know what is being downloaded."

From the site:

"Azureus is a BitTorrent client written in Java. The BitTorrent protocol is a new way of exchanging or distributing data over the internet. Downloading also means uploading, and the amounts of each are linked, to ensure fairness and rapidity in the spread of the file at hand. To be able to download a file, you first need to get the associated .torrent file. This file, usually a dozen KB in size, is the “signature” of the much bigger file to be downloaded, and it needs special software to be read properly. Azureus is one of those types of software. If you want to host files yourself, you need a tracker, which is basically a central server coordinating the connections between peers. Azureus can provide a tracker too."

Azureus

Dowload the Vuze client (for Mac or Linux)

From the site:

"The Internet Archive is a 501(c)(3) non-profit that was founded to build an Internet library, with the purpose of offering permanent access for researchers, historians, and scholars to historical collections that exist in digital format. Founded in 1996 and located in the Presidio of San Francisco, the Archive has been receiving data donations from Alexa Internet and others. In late 1999, the organization started to grow to include more well-rounded collections. Now the Internet Archive includes texts, audio, moving images, and software as well as archived web pages in our collections."

From the site:

"Capture Me is a flexible screen capture and recording utility for Mac OS X which features a floating capture window, several saving options, and resize ability."