Usually when you find a Quick Start Guide, its to introduce you to a new system. In the case of Faith & Demons, it's to introduce you to a new setting for the Savage Worlds Rules.
So, what kind of setting is Faith & Demons? Well, it's our world, around the years 1000 AD (the authors don't use C.E. dating, and I applaud them for it). The Dark ages might be owing to an end, but creatures from the dark have made it into our world. It's a world of magic (many types of magic). It's a world in trouble, and it's up to your players to help stem the tide of the undead and other evil that walks the world.
It's historical in it's foundation, but obviously strays far and wide in this setting, which is fine. It's a fantasy setting will roots players can relate to.
The quick start includes a short introduction to the setting, a short adventure and 6 pregens. The one small complaint I have is that the pregens are caster heavy - 4 of the 6 characters are casters. Maybe it's my roots in D&D, but I feel that the numbers should be reversed. Well, that and the only part of Savage Worlds I have difficulty grokking is the casting. Go figure ;)
Still, not bad for free and looks like an interesting setting for Savage Worlds.