I wrote a blog post over at OrcsWeb that gives an introduction to SQL 2012 AlwaysOn Availability Groups (AAG). This post explains what AAGs are, some of the features, and what you need to get started. You can find that post here.
I wrote a blog post over at OrcsWeb on setting custom SQL ports for multiple instances of Microsoft SQL Server to be accessed via SSMS. It walks through the troubleshooting process and how we resolved the issue. You can find the post here.