Cool
I think your videos are very accessible and are good examples for people to get started.
Another hint that's worth mentioning: The shell allows completion with the TAB key, so you don't have to type all. Also it offers all the options when multiple things are possible.
It's still pretty basic, but can be convenient in some cases.
In the future I hope to include a full ipython shell in there, which will allow more things, like multi-line editing, and using the '?' character to get help from within the shell. (you can follow the status of that here
http://bugtracker.makehumancommunity.org/issues/824)
Still, using python builtins .__doc__ and dir() you can already do some introspection into the code, and grab documentation directly from the shell, instead of having to read in the code.
If you're interested in this, this article might gave you some ideas:
http://www.diveintopython.net/power_of_introspection/If you're acquinted with an IDE like Eclipse that helps you while writing code, you might be inspired by how these concepts built into the python language can offer similar features.