Wicked Cool Ruby Scripts is a compendium of scripts that will make your life easier by saving you time and solving problems. If you find yourself wasting effort and time on a task a trained monkey could do, it's time for Ruby to come to the rescue.

Unless you've been living under a rock for the last couple of years, you've probably heard of Bitcoin—the game-changing digital currency used by millions worldwide.

GNU make is the most widely used build automation tool, but it can be challenging to master and its terse language can be tough to parse for even experienced programmers. Those who run into difficulties face a long, involved struggle, often leaving unsolved problems behind and GNU make's vast potential untapped.

You don't need to be a wizard to transform a game you like into a game you love. Imagine if you could give your favorite PC game a more informative heads-up display or instantly collect all that loot from your latest epic battle.

Have you ever wanted to make a video game, but didn't know where to start? 2D Unity is an approachable guide to making your own games using Unity, the powerful, free-to-use development platform.

You've got data to communicate. But what kind of visualization do you choose, how do you build it, and how do you ensure that it's up to the demands of the Web?

CSS3 is the technology behind most of the eye-catching visuals on the Web. But the docs can be dry, murky, and full of dastardly caveats for inconsistent browser implementations.

"I honestly didn't believe I'd learn much from the book because I've been working on Android security for many years. This belief could not have been more wrong. Android Security Internals has earned a permanent spot on my office bookshelf."—Jon "jcase" Sawyer, from the Foreword