Chris Aldrich provides an introduction to webmentions. This includes unpacking the specification, the notion of mentions, the idea of kinds and way in which sites are potentially able to connect two-ways. This continues Aldrich’s efforts to document the IndieWeb, which has included a thorough overview of the IndieWeb and the future of feed readers. This introduction is different to Aaron Parecki’s guide to sending your first webmentions or breakdown of the oAuth standard.