Curation is the act of identifying, selecting, organizing and sharing online content on a specific topic to match the needs of a target audience. The core aspects of curation are defining the topic and audience, sourcing potential content, evaluating and filtering content, and organizing it. Effective curation requires defining goals, understanding the audience and their learning styles, crafting an engaging message, and establishing a framework. As learning has become more self-directed and on-demand, curation tools help learners access information from any device to learn what they want, when they want. Curation tools like Diigo, Evernote, eLearningTags and Pearltrees allow users to collect, organize and share online educational content.