When it comes to creating new things, ideas are a dime a dozen. Everyone has an opinion. Yet, it is easier said than done to create something that's logically coherent. Furthermore, the well of ideas tends to run dry too after a while. This is where the KOBOLD Guide to Worldbuilding comes in. While not exactly "meaty", it has plenty of advice covering a wide range of topics. Each topic takes up about 5 pages of information, but it's concise and to the point. If I had to nitpick though, it's that not all the topics are equally well-written, but that's to be expected from having so many contributors. Art in the book is also a little sparse. It would have benefited from having more accompanying visuals.