So my only request to the other members here in this forum is to teach me what can be taught to them that I may not know at the moment, although I am not an expert here but only basic thing about bitcoin that I share with my acquaintances here in the community I'm in. So you are free to provide additional knowledge on this matter and I am willing to accept it because I am also one of those who are still learning about bitcoin.
I think it depends on what you're planning to teach? If it was Bitcoin in general then simple history and use cases should be more than enough as a topic for discussion, maybe even some of the technical stuff if you know about them (or you can study them together with your neighbors).
If it was the investment side then you have a lot of topics you can consider. It's also going to help to at least let them know Bitcoin isn't a quick get-rich scheme and identify what are the things they need to know to start investing. It can also help you study it yourself, it's much more efficient especially if you're going to do regular study meetings like this.