2. The amount of energy and time you expend preaching to someone about bitcoin is not a warranty that he will accept what you're offering. Maybe not immediately!
3. We should always tell people to go do their own research about bitcoin after giving them some preaching about it. Doing their own research from with what they get online can strengthen their conviction about what they've have been told.
I think when we educate people about Bitcoin, and try to get them interested in Bitcoin. Even if someone doesn't immediately accept our offer, we should keep trying. Because only with effort we can create awareness among people and attract them to Bitcoin.
Your suggestion is good that after preaching Bitcoin we should tell people to research about Bitcoin, it is natural that when a person researches and informs himself about something, his interest and belief. increases. Now getting information has become very easy. There are various platforms online for just about anything. People need to be aware that they can get information about Bitcoin online from various platforms.
When a person gets to know about a new term automatically he/she will explore and find what it is. When someone does like this it is our responsibility to help them know better. We can suggest them with some sources available to know better about bitcoin. Even after that if they're interested it is time to give the best of our ability.