Item — HN Reader

Since we're in the topic of book-writing, I want to ask HNers for opinion:

I consider myself pretty knowledgeable with Google App Engine (built 2 websites with it). I'm thinking of writing a (self-published) book on the topic. In my dev, I use Scala and CoffeeScript+AngularJS. My questions are:

(1) Is App Engine too small to worth writing?

(2) Should I include "beginning Scala and CoffeeScript+AngularJS" (which means will be OOT and take significantly more effort to write)?

(3) But if I don't include them, wouldn't that significantly limit my target market? (people who use Scala and CoffeeScript+AngularJS on App Engine)

I feel like the intersection of those three topics would be fairly small.

Maybe App Engine Development with Scala. And then the coffeescript and angular as a separate book or a short appendix.

Check out the Leanpub bookstore for some ideas about what is selling well...

https://leanpub.com/c/software

My opinion (as a Scala consultant, so biased) is the market for a good book on Scala web dev is larger than a book on GAE.

As a Scala developer I would really buy a book on Scala, which explains advanced features. "Scala in Depth" is good, but I would want a book with a lot of stuff on type system, FP, to the level of Scalaz, Shapeless, and macros.