Have you tried https://www.codecademy.com/ ? Might be a bit basic at first if you already know what you're doing with the other languages, but there's loads of practical tutorials and it's all free.
I agree that it's good, but it now has premium advanced courses (so not all free any more).
@fizzy.bleach started
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Have you tried https://www.codecademy.com/ ? Might be a bit basic at first if you already know what you're doing with the other languages, but there's loads of practical tutorials and it's all free.