Here are a few links I’ve used relating to ADFS:

1. ADFS 2.0 Troubleshooting Guide
   • http://technet.microsoft.com/en-us/library/ff641699(v=ws.10).aspx
2. Setting up ADFS 3.0 (Server 2012 R2) for Office 365
   • http://blogs.catapultsystems.com/smcneill/archive/2014/01/04/setting-up-adfs-3-0-server-2012-r2-for-office-365.aspx
3. Things to check before troubleshooting adfs 2.0
   • http://technet.microsoft.com/en-us/library/adfs2-troubleshooting-things-to-check(v=WS.10).aspx
4. Test ADFS
   • https://FS.DOMAIN.COM/FederationMetadata/2007-06/FederationMetadata.xml
   • https://FS.DOMAIN.COM/adfs/ls/idpinitiatedsignon.aspx