C Programming

I want to become insanely good at programming in C. How should I go about this? I have a good background in C++ and Intel assembly. Where do I go from here?

>>8
Yes. But knowing C, you'll be able to program and understand better low-level stuff, work in the few projects where higher level languages performance can't be afforded (because they are performance-critical, or because they will have a million users), and understand and modify tens of thousands upon tens of thousands of open sauce packages.