C Tutorial

Hey, I know some basics of Python, C++ and Lua programming - especially Python. But now I want to dive deeper into the world of C++ and therefore I thought that I definetely should start with C if I want to understand it completely and be able to read already available sources. Anyone got a good recommendation for a C tutorial? (Crash-course would be great, something I can read in 2-3 hours)

>>15
Define "speed" and "functionality."
Speed as in execution speed? Programming time?
Functionality as in standard libraries available? Or functionality from what the language provides?

My vote goes to Python either way. It's fast enough, it's easy and quick to program in, and trounces Sepples in the functionality department, from the point of view of both language and standard library features.