pranomostro, links don't work for me, but I've got the idea. Thanks!
Edit: nevermind, didn't saw links have parens in them.

venam, I've studied Boolean algebra, numeral systems stuff, and other basic things for CS state exam after school, however that was very brief (without how this data is represented by computer for example) and I barely remember anything. Odd fact is that it was 2012 and the only accepted PL for exercises was Pascal.

strang3quark, I see, thank you.

Think I'll learn Python with Lubanovic's Introducing Python just to be able to automate everyday stuff ASAP, and focus on C with foundations right after. Can you recommend some learning material to check after K&R and/or C Primer Plus? Or is it better to straight up start checking open source projects in your opinion?