Download the correct binary, usually the standard Linux binary will do. Follow the quickstart guide and let us know at [email protected] if you run into any problems.
You should be able to automatically download a demo license. If your machine does not have an internet connection, run
$AMSBIN/dirac
which should give you a LICENSE INVALID message and your machine info. Please send this as plain text text to [email protected] to request a demo license for your machine.