Some improvements made
You've taken on board the comments made about the music loop and have fixed that, which is nice to see and hear. The tutorial is a good one, but I'm still waiting to see the new graphics (or am I being too picky here?)
Anyway, I'd change the name of the dictionary to a glossary and I'd add a few more terms to it:
imho - In my humble opinion
FTW! - For the win (Usually added after a person, or action, to show how great it is)
roflmao - roll on the floor laughing my arse off (a combination of lmao and rofl.)
Still, you've improved the flash overall, although with something as versatile as a definative tutorial like this, you can certainly say that there are always improvements that can be made, since Newgrounds is evolving on a daily basis.