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?

>>7
interesting opinion, but I am not stupid and I do know C's stdlib off by heart.
OP said "I want to become insanely good at programming in C", the only way to become insanely good at C is by doing exactly what I said.

The reward is huge? I dont think so, you can program far more productivly for almost any task in almost any other language