Mala Mahadevan has started learning a bit about PostgreSQL:
I had the opportunity of working on a project converting a postgres database to a sql server based one at work. I used this opportunity to learn more of this platform and decided to write some blog posts on it. I will be focusing quite a bit on how this compares with SQL Server as I go along and hope it will be useful.
PostGreSQL is an open source based relational database – it is easy to download and install from here. I chose the version available for Windows since mine involves a comparison with SQL Server on Windows and this is easier.
Click through for the installation steps.