As an introductory module, it serves. Much better than a lot of 3rd edition and later: substance, simple lessons, it's fine. But there's been even better once we've gotten since.
I'm going to break this review down into 3 parts. The first part of this booklet is DMing advice for newbies, as this is billed as an introductory module. I'd say the advice is decent, covering topics like when to fudge rolls and giving NPCs personality quirks. The second section contains an adventure about orcs who kidnapped a town's cleric, ostensibly so they can have someone they can force into giving them free healings. The orc stronghold is fine, and the ending fight is pretty notable, which is why I'm going to run this. The third section is a dungeon delve into more of a monster hotel type area, with an evil priest prowling around as the "boss monster". The evil priest is himself low level, and isn't capable of creating the skeletons & zombies he's guarded with, though the module doesn't outright say he created them, only commands them. It's all done fairly by-the-numbers.
Now, what I'm going to change is that the evil priest has connections to the Iron Ring, and he is behind the orcs going on a kidnapping spree. Once caught, he will give up his slaving connections, sending the party to Specularum for the Veiled Society, which I will further modify to include the Iron Ring, so that these two modules open up for Night's Dark Terror.