While I don't program in C anymore, I consider K&R as one of the best programming books ever written. Even today when most of us program in higher level languages, I consider it a good time investment to read this book at least once and learn a little bit of C.
Computerphile is so awesome! Been loving the explosion of knowledge they're putting on YouTube. I mean it's real good information from college professors, some of whom have been programming since the very beginning of the modern computing age.