How to turn off the "How to use this screen" dialog
When ever I enter dialogs for skill advancement or inventory, I get the "How to use this screen" notification which I've had to approve always. It's not like I get it only the first time, but every time I enter this screen.
How can I turn this off?
From Mass Effect's main menu, select Options, then Settings, then Tutorials and finally deselect Enable Tutorials (I don't think you can deselect these one-by-one, but if you're at the stage where that's annoying you, then you should have seen them all by now anyway, and if not then they're available in the Codex).