The Ars Notoria is a mediaeval grimoire which was widely distributed and very popular in the 13th-16th century, but virtually unknown until recently. Version B (MS Bibliothèque Nationale Lat. 9336.) is a commentary on the Method which has never been published in English before. The present text is a reorganisation of that commentary into subject order without the loss of any practical detail. All the notae and the full invocations/orations are included, but most of the Latin prayers have been omitted as they do not contribute to the methods effectiveness. The Ars Notoria is still very relevant in the 21st century because it contains detailed techniques to enable the practitioner to absorb whole subjects very rapidly, and to understand very complex subjects on first reading, as well as remembering whatever has been read. Like many magic manuscripts this work was attributed to famous individuals including Solomon (who reputedly received the book directly from God via the angel