Now there's a nice alternative to the traditional, expensive art history textbook. The folks at smARThistory have created a free multi-media web-book that offers a dynamic survey of art history. The online resource combines traditional images with audio and videos, and the beauty is that you don't have to read this web-book in a linear fashion. Rather, you can sort through things by time period, style and artist and find the information that you want. In case you're wondering about the credibility of this resource, it doesn't hurt to mention that one of its founders, Beth Harris, is the Director of Digital Learning at the Museum of Modern Art in New York City, and the other, Steven Zucker, is Dean of the School of Graduate Studies at the Fashion Institute of Technology, part of the State University of New York. Have a look.