There's a plethora of choices to go for when you want to sell bitcoin's idea to the public. I find that the most effective way of letting people know about Bitcoin is through incentivized seminars. For instance, a guy from this forum set up a seminar about bitcoin and its benefits for his community's housewives, given the fact that these members are the ones responsible for managing money in the household. It was a success, and I only wished he gave those people a reason to come back by maybe giving them awesome trinkets that relate to bitcoin and have them follow up on him about their progress.

That being said, I think it will serve you well if you do the same. If you have a knack for speaking in public, or you know someone who does, this is the perfect and the most efficient way of letting people know about bitcoin.