Tiffany St James, a social media strategist, gave a presentation on best practices for celebrity endorsements and social media campaigns. The presentation covered developing a crisis communications strategy, identifying the different types of social media users, setting objectives and metrics for campaigns, researching influencers and building social profiles, creating content for dissemination, implementing an amplification plan, and analyzing post-campaign metrics and insights. The goal is to effectively engage audiences and influencers to augment brand engagement and sales.