CompTIA A+ is the most sought-after certification for PC technicians. This guide covers every aspect of the required exams 220-801 and 220-802. Fully updated to cover the latest best practices, current software and hardware, and mobile OSes, this Deluxe guide also includes an...

"Today, most email is sent like a postcard. We all should want to put our mail back into secure envelopes again. PGP and GPG are two of the leading tools...

• Manage your business documents with version control, library services, content organization, and advanced search.
• Create collaborative web sites using document libraries, wikis, blogs, forums, calendars, discussions,...

Relativistic cosmology has in recent years become one of the most exciting and active branches of current research. In conference after conference the view is expressed that cosmology today is where particle physics was forty years ago, with major discoveries just waiting to happen. Also gravitational wave detectors, presently under...

The CompTIA Project+ Study Guide, Second Edition is your comprehensive resource for taking Exam PK0-004. With 100% coverage of all exam objectives, bolstered by real-world scenarios and the Sybex interactive learning environment, this book...

“The invaluable advice in How to Wow guarantees your success in any meeting situation, from the boardroom to the breakfast table.”
–Keith Ferrazzi, author of Never Eat Alone

In today’s fast-paced world, where an elevator ride with your CEO can turn into an impromptu meeting, your lunch...

This short SitePoint book provides readers with a fun and yet practical introduction to Sinatra, a framework that makes web development with Ruby extremely simple. It's not intended to be a completely comprehensive guide to the framework or an in-depth Ruby tutorial, but will quickly get you up to speed with Sinatra and give you the...

Linux Essentials, 2^nd Edition provides a solid foundation of knowledge for anyone considering a career in information technology, for anyone new to the Linux operating system, and for anyone who is preparing to sit for the Linux Essentials Exam. Through...