Let us promote bitcoin by sharing our knowledge not only here in the forum but through spreading the news to our friends, colleagues, and others on how the bitcoin help us.
That is a bit difficult. When you try to explain what Bitcoin is and how it works, the probability for them to believe you in the first place is very low. You must need to show them how Bitcoin change your status financialy, you gotta show them what you have because of Bitcoin, in that way they will be interested to learn and engage.