The social media giant on Tuesday completed a U.S. launch of Learn with Facebook, a career development platform offering courses to help people learn how to use digital tools, coding for workplace development, and marketing skills. The platform currently offers 13 courses of between 6 to 11 minutes each, a “bite-sized” library the company intends to build out over time, Fatima Saliu, Facebook head of policy and Americas marketing, said in a product presentation Tuesday.