Eh...
I'd say it's a good idea, but there are two things that really annoy me.
1. It's a little bit of an eyesore, maybe update the graphics some.
2. in the code, its "gotoAndPlay" not "gotoandplay", the "And" and "Play" are capitalized.
If you improve those things and maybe add a little more tutorials other than the button, it should be a much better tutorial.