David Sparks has a new Field Guide out and it might be the biggest one yet. This guide covers pretty much all of the DEVONthink functionality and even includes a sample database to work with. David covers every detail of the app, from the settings to integration with third party apps. These are focused lessons that get to the point, unlike the random stuff I find on YouTube. David gets straight to useful information without wasting time asking for likes or telling me to check out other videos.