This is some real classic D&D adventuring, done with all the modern formatting tricks to make it a breeze to run! And it could even be a great candidate for a first-time OSR GM to read, as it really sold the flexibility and spirit of the genre. Most modules kind of assume that you already know how to interpret them. I also liked the compact yet thorough dungeons, the numerous story threads that could be woven in or left out, the prose intro to get the reader into the vibe, and the conclusive final page that wraps it all up so nicely. It's all clearly written for the sake of the DM and players' freedom, and that's what these games are all about!