It's kind of a meme to recommend K&R's second edition "The C Programming Language" (
direct link) to learn C, it's definitely interesting but it also does not teach you newer features of C or justify the purpose of a lot of things, it is however; a good shallow introduction to C, enough to get you going so long as you have a text editor and access to a C compiler (add the -ansi flag if you use gcc or clang, it will be more compatible with the book).
If I was gonna learn C again today, I'd go with
Modern C by Jens Gustedt (
direct link) because of the depth at which it covers everything you need to be a good C programmer, but it is lengthy and there is a lot of information that might just slide off without some prior knowledge of C. You don't need to read the whole thing, but at the very least, scroll through the takeaways section and read any entry that interests you or that you find yourself disagreeing with.
Good luck on the C journey.