One technical item I'd like to see a tutorial on Lue and C++. There are code examples of both used exclusively. I would think they could both be used at the same time. I read a comment from Josh that seemed to be saying C++ and Lua can be mixed. However, if they can be mixed, one would have to know any execution ordering scheme to know how and when Lua is called.
Now that I think of it, a more specific application might be, general logic being defined in C++, while Lua might provide behaviors for various hooks. Can this type of Lua and C++ mixing really be used? If so, it might be nice to show such an example.