too early to tell. But some food for thought. Often on over the last five years, I have taken some online guitar lessons from other sources. I’ve also tried to teach myself. I have finally determined that my hands, although average and size, are formed in a way, which makes it very difficult for me to play many chords on a full-size guitar. i’ve read a lot about the need to practice, practice, practice, train the muscles, stretch the fingers. For years, I’ve hoped, often and on, that I would be able to do this. I’ve reached the conclusion that that advice was not appropriate. My anatomy will not allow me to play a full-size guitar. I have ordered a three-quarter guitar in the hopes that this helps. Perhaps this feedback might be useful to you as you try and help your introductory students get started.