The online platform best known for providing coding tutorials and courses is Codecademy. It offers interactive learning experiences across various programming languages like Python, Java, and HTML/CSS. Codecademy's courses cater to different skill levels, from beginners to advanced, enabling users to learn at their own pace. The platform emphasizes practical coding exercises and projects, allowing learners to apply their knowledge effectively. Additionally, Codecademy fosters a community where users can collaborate, share projects, and seek help, enhancing the overall educational experience in coding.