Thanks for the answers. Copyright use of images, especially screenshots, had always been a confusion point for me.

For the case study, basically I'd like to know what it entails before purchasing. All the other content speak of principles and guidelines but I find it more interesting to read about an actual case study, the thoughts and reasoning behind the decisions made. (I can't find what the case study was about too - just that it's a time tracking service. Is it Harvest? Basecamp?)

You said you'll be working with the company further, I look forward to that one!