can we teach them without having to meet?
We are now in digital world. There was a time that there was no phone, not to talk of a forum or meeting online. But these era is digital. There are a lot of things that we can do online. People even learn online. If you have what it takes to help them know what cryptocurrencies are, you do not have to meet them physically before you start teaching them. But I hope you are not planing to scam anyone.
Indeed, nowadays technology is advanced, but what I complain about here is when we explain to those who want to learn crypto via mobile or social media, sometimes they have difficulty responding to our explanations and are even confused about how to practice it... but in my opinion it is better if we meet the person directly... then we practice and teach them directly, so that they have no doubts about starting to invest.