The document discusses various technologies that can be used for educational purposes, including e-learning, m-learning, d-learning, and u-learning. It describes different Internet tools that can be used for free online learning, including social networking sites, content management systems, learning object repositories, and educational resources. Specific examples of free and open-source software are provided for activities like writing, multimedia creation and sharing, testing, grading, and online course delivery. The document advocates for leveraging free and ubiquitous Internet tools to provide new, engaging, and cost-effective ways of teaching and learning.