Nairobi, Sept. 7 -- For many young people, TikTok, YouTube and Instagram have become unlikely classrooms for money matters. Bite-sized videos and casual posts now cover everything from saving and budgeting to investing and managing debt. The advice is easy to access, often free, and presented in a language that feels familiar. Yet financial advisers warn that not all online content can be trusted.

Joyce Ngari, a communications professional in her mid-20s, says social media has made conversations about money easier to follow and less intimidating. She stumbled upon The Movers Society online and joined because she wanted to learn from peers who were thinking seriously about investments, wealth creation and career growth.

"Sometimes, you n...