1- How to install Service Packs, hot fixes and/or windows Patches in SQL Server cluster?
2- Determining which node you decide to apply patches or install hotfixes on?
3- Move resources from one node to another node in SQL Server cluster
4- Best practice to get a node ready for installing patches or hotfixes
5- Failing resources back to patched node after patch or hotfix installation
6- How to validate cluster functionality after installing patches or hotfixes
7- Brief overview of Cluster Aware Updates (CAU) in windows 2012 R2 configuration