Graphic design is a very competitive field, and many people who pursue work in this field go to college in order to learn the basics of the job and build a portfolio.
However, several years of experience working in the field is an acceptable alternative to a degree. An impressive portfolio, consisting of work created either in classes or for clients, is crucial to the success of a graphic designer. Samples of work show prospective employers that a graphic designer is creative, competent, and able to meet the needs of the client and communicate to different groups of consumers. Another important skill is the ability to meet deadlines.
Graphic design basically is visual problem solving using text and or graphical elements. Your aim is to create something that is pleasing to the eye, and gets the attention of the viewer. But things can't just look cool. They have to work as well.