Codewars is a platform that helps you learn, train, and improve your coding skills by solving programming tasks of many types and difficulty levels. You choose how you would like to learn. Do you want to take on increasingly difficult challenges? Maybe you prefer training through repetition and by improving your solutions. After solving a task, compare your answer with other users and learn from them or help less experienced users by answering their questions.
WIRED has challenged computer scientist and Hidden Door cofounder and CEO Hilary Mason to explain machine learning to 5 different people; a child, teen, a college student, a grad student and an expert.
a programming game that can be used to teach or learn programming in Java or .NET. It can serve as a platform for exploring AI and machine learning techniques. Or it can be a competitive, addictive hobby that eats up all your time and CPU cycles.
It is free of charge, free of ads and doesn't require registration or downloads. It helps you learn by running queries against a real-world dataset to complete projects of consequence. It is not a mere reference page — it conveys a mental model for writing SQL.