An imprint of University of Michigan, digitalculturebooks publishes works about the digital humanities and new media studies. They strive to use new modes of publishing in both the humanities and social sciences.
This site includes many resources that are examples of work in the digital humanities and can be used for work in the digital humanities.
MIT’s Digital Humanities HyperStudio: a good resource, and you can sign up for a weekly newsletter about current trends and research going on in the digital humanities.
The Institute for Advanced Technology in the Humanities: Established by the University of Virginia, IATH explores and creates information technology for humanity research.
Matrix Center for Digital Humanities & Social Sciences: housed at Michigan State University, Matrix is devoted to developing online resources, training people in new technologies, and creating and fostering forums for people to discuss and share ideas related to the digital humanities. They have internships available to undergrad and grad students, both from Michigan State University and from other schools.