I must say I'm very happy that we've keyboard shortcuts, but isn't like normally other Apple software.
Example: We don't just click "O" to open the project. Often we're using
"⌘ + O" like as in Windows version using
"Ctrl + O".
I'll recommend you to add ⌘-click/Cmd before O and also to other keyboard shortcuts.
"Y" or
"Ctrl + Y" for
redo is a very old keyboard shortcut. This reminds me about PC version. But I like better in Mac version as
"Shift+⌘+Z".
I'll recommend you to read the link below from Wikipedia, and may follow this, so it'll be more easy for us Mac users to use this. And we know better than we must to learn all new and be very confusing.
http://en.wikipedia.org/w...f_keyboard_shortcuts