I would love to see C first, then C++. I'm thinking about it like a textbook, going systematically from one step to the next, which it looks like you are doing. Awesome stuff!

What would be really cool, just my opinion, would be posts that do something in C and then showing how to do it (easier or not) in C++, to show both and illustrate the difference for a particular task. Seems like that might be a bit of work though.