13 e-learning sites where you can learn to code online for free or an affordable price

When you buy through our links, we may earn money from our affiliate partners. Learn more.iStock; Gilbert Espinoza/Business InsiderCoding can be a valuable hard skill for workers in an increasingly digital economy.Below, you'll find 13 sites with resources for learning to code online - from MIT's free coursework to an IBM Data Science Professional Certificate - that span categories and popular programming languages such as Python and JavaScript.See more: 9 online computer science classes th