It is very noble to tell your friends about cryptocurrencies in the same bitcoin.
Just like you, my friend enlightened me on the topic of cryptocurrencies many years ago. Then bitcoin was worth about a hundred dollars. But then I didn't believe him in the success of biteoin.
Nevertheless, I am here, and I am grateful to my friends who worked on my understanding of the blockchain and how much it is a breakthrough technology.

You are doing a good deed, but always warn your friends about the risks that cryptocurrency carries. After all, this is a dangerous financial instrument.