I recently received this book in paper format as part of a kickstarter. This will give you an idea of how much I love the Fate Core and FAE systems. Some people may not realize it but in truth both are the same game system with the dials adjusted differently. This fact is one of a whole sets of insights you'll get as you read this toolkit.
Before starting this review, let's say that you can perfectly play Fate without this toolkit. Now, lets face it, once you'll start playing, you'll start tinkering with the system, because that's something GMs like to do, give their unique twist, find the unique flavor, provide the extra rule that will set their campaign appart from others. And that is why this book is for you. This toolkit will show you how modular the design is, how it can be tinkered with, where the dials are. And it will also expose you to a lot of thought provoking ideas, several variations one each theme and interesting possibilities everywhere.
You'll also noticed that most this ideas are not completely finished, and that's allright, because this is a toolkit, it gives you the tools to make your own reskining of the tools provided, to develop further upon them and to come up with greatness. And whe love doing that.
There's a lot packed in the 200 pages of this book, discusions on Aspects, Skills, Magic variations, a whole set of subsystems for special types of adventures and much more. You'll start reading and before long start writing and planning. It's clearly written and explained, yet if you are like me, you'll find you have to read it in small bites, as each idea fires up a lot of other ideas and makes you connect a lot of the dots, or even firing whole campaigns based on a simple possibility. It's worth reading it entirely, yet it's perfectly fine to read only the parts you think you'll need for your adventure, and it's easy to do so, as ideas are clearly grouped and labeled.
Remember also that as much as this book is great and meant for you, this is a toolkit, not The toolkit. You can get this one now and get a feel of what it can provide, so that you'll know what a toolkit does when the new Evil Hat kicstarter for bigger and meaner specific toolkits appear. This is the initial step. yes, but at the same time it's a must have book for all game tinkerers. Because while being the first step, it's a really tall one.
[5 of 5 Stars!]