If Microsoft Project is your thing then you might find this Project 2013 Licensing Guide from Microsoft useful. It’s got a nice overview of all the different Project licences, although it’s not yet updated for Project Lite.

There are also diagrams showing the licences required in a 3-tier on-premises deployment, a Project Online configuration, and a dev/test environment.

Finally, there’s some useful information about when a Project Server CAL is needed as well as some FAQs.

Get the guide here: http://bit.ly/LSAppSvrs