In 1859 Bernhard Riemann, a shy German mathematician, wrote an eight-page article, suggesting an answer to a problem that had long puzzled mathematicians. For the next 150 years, the world's mathematicians have longed to confirm the Riemann hypothesis. So great is the interest in its solution that in 2001, an American foundation offered a...

Previous editions of this For Dummies guide have sold more 650,000 copies. Richly illustrated in full color, this edition covers all the updates in the newest version of Photoshop, the gold standard for image-editing programs. Used by...

Photoshop is the world’s most popular image-editing software, with more than four million users worldwide. This full-color book and DVD work together to create an entire Photoshop training class that photographers, Web designers, and graphic designers can complete...

Photoshop is the gold standard for image-editing programs and is used by professional photographers, graphic designers, and Web designers as well as hobbyists. Designed for those who learn best visually, this full-color guide has been completely updated...

Excel is the standard for spreadsheet applications and is used worldwide, but it's not always user-friendly. That makes it a perfect For Dummies topic, and this handy all-in-one guide covers all the essentials, the new features, how to analyze data...

Twitter is a microblogging service that's changing the way we communicate. Marketers recognize its value, and Twitter Marketing: An Hour a Day offers marketers, advertisers, brand managers, PR professionals, and business owners an in-depth guide to designing,...

The book's...

Banjo For Dummies is the most complete guide to...

Erectile dysfunction (ED) affects 20-30 million American men, most of whom are over 50 years of age. In a UK-based study, 32% of British men had difficulty obtaining an erection, 20% with maintaining an erection. In recent years the physiology and pathophysiology of ED have changed our understanding of what ED is from a purely...

Photoshop is the gold standard for image-editing programs and is used by professional photographers, graphic designers, and Web designers as well as hobbyists. More than 300,000 copies of this comprehensive reference have been sold in previous...

Each year about eight million Americans suffer the death of someone close to them. Now for thse who face the challenges of sudden death, there is a hand to hold, written by two women who have experienced sudden loss. This updated edition of the best-selling bereavement classic will touch,...

Across history, the condition has been called soldier's heart, shell shock, or combat fatigue. It is now increasingly common as our service men and women return from Iraq, Afghanistan, and other ongoing combat zones. Since 1990, Veterans' centers here have treated more than 1.6 million affected men and women, including an estimated...