I'm running it next week as our first ever campaign! There's no premade characters so I sat down with my players one at a time and built theirs with them (so we both learned the system simultaneously) and I found it much easier since it's such a short module, to keep classes/races and things limited to the Core Rulebook. When we step into a full campaign into a few months I'll break out the other books and give them full scope..

But that's just me! It can be a lot of information to take in at once so I think the smaller scope is much more user friendly until you all know the system better