[Blink]

100% one of the best first languages. Why? Because it doesn't abstract all of the hardware away from you. You get to play with pointers and inline assembly. Other languages like Java do not allow this and so some people never get the experience. C also helps you learn how to better optimize your code, as you will usually be more aware of what your code is doing under the hood and this also helps when you code in languages like Java.

I second this, even though I don't know C. I would say it's good as a 2nd language, first should get you in the right mindset, like py or js.
Looking back, I should've learned C as my second language.
Now, I need to go learn C.