It is not upon you to complete the work, but neither are you free to desist from it

I’ve learned a lot about rape and rape culture from Tumblr, and now I want to start educating people. However, I am quite socially awkward, so I’m not really sure when and how to bring it up appropriately. Also, how do I make sure I don’t overwhelm them when it is the first time I am talking about rape culture to them? Should I arrange a campaign at my high school or should I talk one on one? Also, I don’t want to trigger anyone, how do I do that?