The document discusses personal learning environments (PLEs), the TRAILER project, and visual learning analytics. It defines PLEs as individualized learning systems under learner control that support goals, content, and communication. The TRAILER project developed tools and methods for integrating informal learning into formal education through an ecosystem connecting learning, competencies, and institutions. Visual learning analytics uses techniques to target instruction based on learner data and goals, with the VeLA system providing visualizations of analytics to support learning processes.