Looking at the tutorial I see that there is a lot of artwork to play with - where do I find it ? All I see on my mac is the app Thank you
If you click on View>Atlasses you will see them on there. I don't think you can edit them there, as I never tried.
You should have received an email with the artpack. Im not sure if they are still giving it away with BB2
You should have received a download link, if not check spam or email support@buildbox.com to get it sorted.
If you right click on app, or hold control, left click, you will see "Show Package Contents". Then open contents folder, then resources. That's where art is stored IF you have them installed.