Personal finance advice can feel intimidating, often filled with jargon and complex strategies. Vivian Tu is trying to make those conversations easier to understand. Better known online as "Your Rich BFF," Tu shares short videos on TikTok about personal finance topics such as negotiating a salary and managing credit card debt. Tu, who calls herself "your favorite Wall Street girly," has built a large following across social media. She also hosts the "Networth and Chill” podcast and recently released a b ...