You can check beelikej's post HERE. We want to start on February, the 1st, so plenty of time to prepare yourself.
You can find the home of Pandora and more informations HERE. The site also provides you with files to download. Or look at the HELP POST to get a better feeling for what this is all about. If there are any questions now or during the challenge, we're here to help.
While we sweat our way through this journey we can cheer each other on (or carry each other) here on LJ or on twitter.