Codecademy is an interactive online platform teaching coding through in-browser lessons and projects, covering languages such as Python, JavaScript and SQL for beginners.
DataCamp is an online learning platform for data science and analytics, offering interactive courses in Python, R and SQL, with hands-on coding exercises and career tracks.
freeCodeCamp is a non-profit that teaches coding for free through interactive lessons, certifications, articles and YouTube videos, with a large community of learners.