Head First C : free Download

Head First C provides a complete learning experience for C and structured imperative programming. With a unique method that goes beyond syntax and how-to manuals, this guide not only teaches you the language, it helps you understand how to be a great programmer.
“Head First C is an accessible, light-hearted introduction to C programming, in the classic Head First style. Pictures, jokes, exercises, and labs take the reader gently but steadily through the fundamentals of  C including arrays, pointers, structs, and functions before moving into more advanced topics in Posix and Linux system programming, such as processes and threads.”