Dwarf Fortress may be the most complex video game ever made, but all that detail makes for fascinating game play, as various elements collide in interesting and challenging ways. The trick is getting started. In this guide, Fortress geek Peter Tyson takes you through the basics of this menacing realm, and helps you overcome the...

Go under the hood of an operating Voice over IP network, and build your knowledge of the protocols and architectures used by this Internet telephony technology. With this concise guide, you’ll learn about services involved in VoIP and get a first-hand view of network data packets from the time the phones boot through calls and...

Yes, you can create your own apps for Android devices—and it’s easy to do. This extraordinary book introduces you to App Inventor 2, a powerful visual tool that lets anyone build apps. Learn App Inventor basics hands-on with step-by-step instructions for building more than a dozen fun projects, including a text answering...

Now you can overcome the vexing, real-life issues you confront when creating apps for the iPhone, iPad, or iPod Touch. By making use of more than 100 new recipes in this updated cookbook, you’ll quickly learn the steps necessary for writing complete iOS apps, whether they’re as simple as a music player or feature a...