03/10/2017: Important announcement:

As some of you know, The WikiLeaks dump of "Vault7" contained, among other things, a 2015 copy of my "Android Internals" book, since Technologeeks provided training for them. Though by now a bit outdated, it's still a high quality, color PDF updated for Marshmallow PR1, and is about 85% the same as the existing book I provide, which is updated to Nougat 7.1 - Android changes rapidly, but the core isn't radically different.

Apparently, WikiLeaks can exercise discretion in not leaking binaries (which is what was actually worth something in that otherwise disappointing dump), but cannot do so with copyrighted material. Although a certain CIA agent was clearly in violation of my book terms of use by posting it on their Intranet, I can't sue anyone there. Nor can I sue WikiLeaks for their blatant disregard of law (save that of their puppetmasters), or copyright infringement. So I've decided to make that PDF copy absolutely free, and rather than getting it off a dump (which I would strongly caution, considering PDF 0-days aren't hard to find..), you can get it right here. For the impatient, that's:

Right here

NO, I cannot retroactively refund everyone who bought the book, but I do thank you for respecting the insane amount of work I put into it, and not releasing the PDF publicly. I will still maintain updates for whatever Google concocts with Android O, and naturally all my tools will remain free.

I hope you enjoy the book, and encourage you to look at the Technologeeks Training we offer on it. And thank you all for your interest!