The beginner's course "Start Here! Grammatical Foundations for Students of New Testament Greek (A Student-Friendly Video Series)" is available for purchase any time. It is in both video and audio format and can be purchased for download . Currently, CKI is running a sale on this product that allows you to get all of the videos for $60 and the audio for $30! As the title suggests, this resource is either video- or audio-oriented. It is divided up into 6 main lessons and contains around 5+ hours of grammatical instruction. Each lesson consists of a number of short, user- and student-friendly videos (or audio files) and takes note of nearly 200 grammatical concepts that English learners / speakers who want to venture into learning Koine Greek should find helpful. The videos and audio files are available for purchase and download.
Start Here! Grammatical Foundations -Audio