Useful links:
To download AWR Microwave Office (good for 120 days):
https://awrcorp.com/download/login.aspx
and to register a license: https://awrcorp.com/register/evaluator.aspx
AWR has created an iPhone app for Txline
Keep in mind that you must use register with your *.utdallas.edu email address.
To purchase a permanent PDF version of Pozar:
http://www.wiley.com/WileyCDA/WileyTitle/productCd-EHEP000434.html
ADS 2009 Tutorial