CommonMark Ready Reference provides a full tutorial, hack collection and quick reference for MarkDown and CommonMark.

MarkDown is an easy human-readable text format that can serve as the common base for exporting to multiple document formats such as HTML, ODF, DOC/DOCX, PDF and ebook (EPUB, MOBI…). It is a great tool for creative writers, technical writers and authors to create books, manuals, web pages and other rich-text content. CommonMark is a new well-formed standard for the old MarkDown spec.

CommonMark was one of the reasons the author was able to write and design 21 books in one year. Incidentally, this is the first-ever book on CommonMark!