Great HackADay article about learning morse code. Not new, but I just found it...
https://hackaday.com/2020/02/21/learning-morse-code-the-ludwig-koch-way/
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And this is the amusing article that lead me there - key morse code via laptop lid.
https://hackaday.com/2020/06/20/key-that-morse-with-little-more-than-your-laptop/
