1. Get a wallet to store bitcoins
2. Start getting bitcoins with stuff such as gambling, dice, posting, surveys and much more
3. Continue until you want to cash out
Regardless of the way if they could be sure they are definitely interested in bitcoin.
If it had been interested would have been easier to teach.
You got the point. Teaching someone who is interested to learn will make it easy for you to teach. You can just teach them the basics, and for sure they will search for the advance. As long as they want to know more about BTC, they can learn by themselves as time goes by with minimal guide/supervision by you.
Yeah, it won't be hard if you are going to teach someone who is really interested. But you will get a problem for those who doesn't have the interest but you want to teach about bitcoins.
You much encourage them easily and the suggestions are really fit for it.
Then if they are not interested, why teach them, right? Because I think it's nonsense to teach someone who is not showing curiosity or concern about something. But if you insist, then tell them the advantages of BTC and why you love it. Maybe you can encourage them by doing that. And after, you can guide them step by step.
That's right don't waste your time if there aren't interested either, but I think it is a case to case basis. For example, you really want to teach friend about it and he can't find a real job either. And he isn't aware about cryptocurrency. You can share your knowledge to him about it, go back to the first statement, if you see he shows no interest, don't waste your time.