##1.1 About the author
This guidebook is a result of being heavily involved with both free software and usability. Most of the learnings come from working on two free & open source software projects.
In Fall–Winter 2010 I interned at relevantive in Berlin and did user tests in the lab, in the car and by foot. I also got involved with OpenUsability. I did interaction design for Cardapio, a menu and launcher similar to the Windows start menu and Mac OS Spotlight. In Summer 2009, I worked together with Canonical’s Charline Poirier on usability testing for Shotwell before it became Ubuntu’s default photo application. The results are published on my blog.