Corbis , a vast online image library, even lets you set up an portfolio for free in which you place your favorite Corbis reference images. They know it's useful for artists. But don't forget to read to the end of this article for a caution on copyright. It's about impossible to avoid or live without these things they're so pervasive. Even you don't subscribe to them, chances are someone you know does, and has to throw them out once in a while.
Fashion magazines can inspire glamorous fantasy portraits, or great costumes and fabrics.
News photographs come in a whole variety, and it's likely you'll find pictures that capture your attention for one reason or other the expression on a person's face, the drama of the scene, the composition, the pose, the situation. Just looking at some of these pictures can inspire great pictures, and studying pictures may well be used as to train your eye to see what makes a good picture and what doesn't. If they're particularly great and useful-looking, keep the pictures in whatever form suits you best in a scrapbook or on your wall. Just don't forget to look at them when they'd be terrific for what you're currently drawing or painting. Collecting pictures for your scrapbook or wall is a long-term project.