My student(advanced), just brought in this circle rubber thing in to his lesson and I have honestly never seen it before in my 10 years of teaching. Is this just a muted pick? It actually works out nicely if you are wanting to stay quiet in the home. Any thoughts on this?

Here's a book I purchased a while back... Not sure if I can post this here... If anything, please take it down. Enjoy!

Youll need a couple basic lessons to start teaching right away. Here is how I usually start out(see attached)...especially if they are new students who have never played the guitar before. Go through the slides and printout what you want. I try and keep it simple and give them something easy and something they can start right away for a quick WIN! Let me know what you think...