I agree with some other comments here that it could help where your friends are coming from? Are they financially literate? Are the concerned about government overreach or censorship? Do they worry about climate change? Do they want to make a quick buck, etc. etc.?

Depending on their starting points you could gear the slides,info and discussion in different ways. They worry about climate change? Show them examples about how bitcoin mining can make transitory renewable energy cheaper and accelerate its spread. Are they concerned about social justice? Show them some slides from Alex Gladstein or what Gridless does in Africa. Do they want to learn the monetary aspect of it? Michael Saylor's talks and slides or e.g. https://learn.saylor.org/course/PRDV151 might be most useful.