I’m brushing up my C now using the book C Programming - A Modern Approach by K.N.King.
I have the classic K&R book, I do not recommend it. I just find it very hard to read, no matter if you are a novice or a veteran.
After some googling on people’s recommendations, I got the K.N.King book. I’m glad that I did. Very easy to read, has a good set of exercises and programming projects. It is one of those programming books that read well, I mean not dry at all and to the point at the same time.