level editor tutorial

I guess it's basic stuff...
But is there a tutorial for using the editor somewhere? I really want to make levels, but I don't really know how.

[mod]Changed topic title to one that actually makes sense. See the Official Forum Rules for more information regarding topic titles.[/mod]

As far as I know, there's nothing, aside from AClockworkLemon's Advanced Features Tutorial. I'd suggest you to learn by example, by looking at how Nifflas's level is made, and ask specific questions about what you don't understand in the Forum. I can't help you a whole lot since I haven't bought 3rd party level support, even though I've messed around with the editor for a while.