Ready is available for Windows, Macintosh and Linux. You can visit www.getready.io and download the app from there.
To install Ready, open the archived file and click on the application. It should run immediately. You might be asked what screen ratio to use. You’ll want to select 1024 x 728.
Ready will start the first time by trying to download artwork for use in the app. If you’re not near an Internet connection, or on a low-bandwidth connection, this could take a little while-- several minutes. On a fast connection it should be nearly instantaneous.