The 1 Greek for Beginners course is the first of a series of Greek learning books by Hellenic Theorem Publishing. It is bilingual, suitable for high school and adults, full colour illustrations and includes language activities, grammar, speaking and Listening skills, some accessible via the QR Code in the book and links, and a "Doggielogues" which are amusing bilingual dialogue section for intermediate level readers with animal characters speaking the colloquial language suitable for adults. It also includes the latest Rules of the Monotonic System by Dr Alfred Vincent, all explained in ENGLISH.
If you are sick of buying beginner books that treat you like a child then this may be of interest to you.