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Ah, classic. X in Y minutes is a great resource if you want a concise, simple, brief example of what's cool about a language. It's not enough to actually learn the language from, but it's an excellent place to start.

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If you know enough linguistic neighbors of the x you're trying to learn the xiny cheat sheets can actually get you surprisingly dangerous.

Ah, the classic assumption problem perhaps best demonstrated by lua:

"I wrote an hour's worth of code, and then I realized this language is 1-indexed when none of it worked!"

I somewhat like learning languages this way, I rarely forget my own mistakes I have to fix.

I think I like learning this way, but then I remember the time I learned the hard way that Matlab hates when scripts begin with a number, and I question my life choices.

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