I can recommend one book. "The C Programing Language" from Brian W. Kernighan and Denis M. Ritchie (Denis Ritchie was one of creators of C language) make learning very easy. Read chapters, follow primers and try to understand them and, most important, do exercises. This while not make prof programmer from you bat it is begin of journey. After that goes hard part, learn standard libraries and libraries in field you work in (example for grafic you while learn openGL). This learn from documentation of particular library and commented code.PS: My writen english is bad so I apologize to reader.