The lesson format for the complete beginner would include note learning, initially. This would progress to scales and finger exercises. For textbook material, the series that I have found that works well to prepare pupils for Trinity and ABRSM external exams and relevant materials is "The Guitarists Way Series" by Peter Nuttall and John Whitworth. I have made progressive videos with PowerPoint which are currently on my YouTube Channel "David Conway Solo Guitar@davidconwaysologuitar4604". In my experience, I have found it conducive to the holistic musical learning of the pupil if they also study a theoretical pathway, and that this pursuit of Music Theory develops in tandem with their playing. After textbook material has been studied I normally conduct an Aural and Sight-reading tests, or introduce a theoretical aspect, etc. For online lessons, I use either Skype or Zoom and screen share sight-reading tests. Then examination pieces are chosen and worked on. Music Theory worksheets are emailed to pupils, which can be scanned in and emailed back to me for marking. I advise pupils to practice with a metronome application on their phone, to aid tuning the guitar and to gain experience with working with and listening to the metronome