Teaching rationality

I am interested in promoting rationality in my local community. As I don’t know anyone who are involved in the movement I’ll probably have to do some initial teaching. Which, in your oppinion, are the most essential/​fundemental parts of rationality, and of these which are most accessible to newcomers?

While I learned a lot from Yudkowski’s ‘Rationality: from AI to Zombies’, it’s my impression that large parts of it would be confusing and discouraging to anyone without technical knowledge and in particular strong math skills.

The Bayesian Conspiracy, Waking up with Sam Harris and Rationality Speaking all provide valueable skills but from what I’ve experienced they all teach rationality in an indirect way rather than focusing on teaching it directly.

Does any exercises that help teach rationality exist?