It is worth talking to people about it even if it is just laying the foundation, sooner or later they will hear about bitcoin in the news and from other sources and will already have a little bit of understanding. 

It is always worth mentioning this forum as a place to go to start with then they can do as much or as little research as they like, there are also faucets which they can use to get some satoshi so they can see how it all works.

I have spoken to a few people but interest is quite low although when the price shot up last week they seemed a bit more interested