The purpose of this paper is to introduce the reader to a practical orthography that has been developed for Yongning Narua (hereafter YN Narua) since 2008. It is intended to be of use to native speakers wishing to read and write in their language, to researchers, and to other interested parties. Part One, the user's guide, is a concise description of the orthography. Part Two, developers' notes, presents more detailed phonological information, along with methodology and reasons for orthographic decisions. Part Three gives examples of YN Narua text written using the orthography.