The simplest take on Lops is that it's a procedural hierarchy editor. At the school where I teach we'll be using Lops this year for doing layout, creating sets, all that stuff, so this quickstart is heavily focused on that. From that perspective there'll likely be a lot of 'ahhhh, is that all there is to this?' moments, as this side of Lops is relatively straightforward. Lops and USD are capable of lots of other things, will cover those when I get to them!