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Codecademy: https://www.codecademy.com/learn/learn-typescript "You will learn how to apply the JavaScript syntax you already know to TypeScript’s type system. This will help you build your own programming experience and give your code more structure. You’ll also use TypeScript’s linter to reduce compilation errors and speed up workflow."
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Freecodecamp.org: https://www.freecodecamp.org/news/learn-typescript-beginners-guide/ In this article, you will learn:
- What is TypeScript and why should I learn it?
- How to set up a project with TypeScript
- All of the main TypeScript concepts (types, interfaces, generics, type-casting, and more...)
- How to use TypeScript with React
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W3Schools: https://www.w3schools.com/typescript/