Thank you , its not so much as confidence more like not caring butchering the English language. Plus my rule is "a great tutorial is an existing tutorial" .�� Plus seriously , who does not love Russian accent ? Star Trek Checkov is one of my favorite characters a Russian with a heavy accent played by an American born in Russia. If in doubt always ask Star Trek, Star Trek knows it all.
About the transparency hint, sounds right, or maybe a plus symbol which is what most people expect. But then my rule is "a great feature is an existing feature" :D