Beth Bridges presented five ways to build a business using social media: 1) Use social media for networking, not direct selling; 2) Repurpose content across multiple social media platforms; 3) Post content relevant to your audience and business, avoiding off-topic posts like cat photos; 4) Understand popular memes and ideas being shared about your business; 5) Research the social media preferences of your target audience and align your outreach accordingly. The presentation provided tips on using platforms like Facebook, LinkedIn, and Pinterest to engage customers and develop brand awareness through helpful, on-brand content.