Don't immediately give an example of buying a car, house, etc from Bitcoin profits, because this will not enable them to appreciate the process and it will be easier for them to forget about Bitcoin when they haven't gotten any results from Bitcoin. And imagine if the person who taught them still didn't have a car, house, etc from bitcoin profits, would they believe what that person said? I don't think so mate.
Yeah, you are right. Some people make the mistake of telling newbies about the benefits they can get from Bitcoin without first teaching them the primary things, and as they keep learning, they will know more about what they themselves want to gain from their investment. It's just like when a gambler asks you to stake in a game that he has predicted, and he is promising you that if you stake in the game, you are going to win a huge amount that you can use to buy a car. Meanwhile, he has been gambling for more than 10 years but has not been able to even buy a bicycle. Normally, one can achieve some great goals from their Bitcoin investment, but that also depends on the amount of money invested in Bitcoin. Someone cannot invest $100 in Bitcoin and expect to buy a house or car from their generated profit in the next five years.