The Korg XD recorders (D16XD & D32XD) literally contain a full studio of gear in one machine. This tutorial helps unpack all the amazing features and complexities as well as giving some basic understanding of mixing, eq's, levels, etc. -- gets you to quality recording quicker. I wish I had this when I first bought my D16XD several years ago.
Great visual reference, especially if you're just getting started. Thanks, David!