For the last, hmm, 6 months I\'ve been reading into Programming in C, I got myself K&Rv2, BEEJ\'s socket guide, Expert C programming, Linux Systems Programming, the ISO/IEC
You need to challenge yourself with a bigger, more complex project. Working through code snippets, as most book examples tend to, will not get you far past the chapter exercises.
You're working on being a book-smart developer. Do something real world and become street-smart!