https://qz.com/1249025/facebook-ceo-mark-zuckerberg-advice-on-congressional-testimony-from-an-expert/

Facebook’s CEO Mark Zuckerberg is facing perhaps the biggest test of his career: a grilling from members of Congress on his company’s various troubles, from the Cambridge Analytica scandal to Russian meddling on the platform.

As the New York Times reported earlier, Zuckerberg got a “crash course in charm” in preparation for his two days of testimony in front of Senate and House committees. Lawyers, including some Beltway experts, are preparing him for what is likely to be an ordeal, since he is famously averse to public appearances under pressure.