Graphic designers convey inspiring and informative ideas in advertisements, brochures and other marketing communications materials. Some graphic designers work for specialized design firms as part of a collaborative team, while others are self-employed and work independently. Print and digital designers use complex graphics tools to manipulate text, images, animations and color. Graphic design is a constantly changing and developing field. Designers must keep up with the commercial and artistic trends in the industry – or they may find themselves quickly left behind. They must also remain current on new and updated computer graphics and design software programs, which are in a near constant state of evolution. This is particularly true for designers working as freelancers, and for those interested in advancing to higher positions within their companies. Organizations such as the American Institute of Graphic Arts or the Graphic Artists Guild provide members with educational updates on new technology, software or methodology. Completing certification programs in vendor-specific design software can also help build credentials.