You are not going to learn C with one book. K&R is one you should know, but it is not everything you will need. I think it still is a nice book for beginners,

You are not going to learn C with one book. K&R is one you should know, but it is not everything you will need. I think it still is a nice book for beginners, but not the most pragmatic option. You may prefer to start with something more up to date. But if you really want to learn C, read it at some point. As a side note, even if C was already a dead language, I would still recommend to read the book just as an example of good writing.