Should I learn C or C plus plus first if I want to learn C?

Very! C++ isn't the best language out there, it certainly has its issues, but it's very powerful. It's also fairly low-level, as far as modern languages are concerned. Python has all the power with few of the costs. If you already know how to program, you should be able to pick it up in less than two hours. Most the concepts you learned in C++ (inheritance, polymorphism, etc) still apply, too. Python has the advantage of plenty of super easy-to-use libraries for many thing (such as downloading a web page). It can't hurt to try, so give Python a spin and see if it benefits you.

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