If you don't know C at all, hunt down a old book called The C Primer by Hancock and Krieger. It is the best introduction to C for absolute noobs. It was based o

If you don't know C at all, hunt down a old book called The C Primer by Hancock and Krieger. It is the best introduction to C for absolute noobs. It was based on teaching notes used at Bell Labs itself and is quite easy to read and follow (i owe my career to having read this book when i was a noob). You can then move on to K&R. Next you should checkout Data Structures and Program Design in C by Kruse, Tondo et al. This book teaches Algorithms/Data Structures but using good structuring techniques in C. Follow up with Sedgewick's books. To learn about C and Low-level details there is nothing better than Computer Systems: A Programmer's Perspective by Bryant and O'Hallaron. Finally, to learn about the dark corners of C checkout C Traps and Pitfalls by Andrew Koenig and Expert C Programming: Deep C Secrets by Peter Van Der Linden.