Don't know if Don can't "toot his own horn", so to speak, but Pluralsight is another option. It's like $30 a month and has Powershell and like every technology training video known to man. There is a free trial period as well so you can try it out.
They do offer a free 7 day's where you can watch the series there. I'm in the middle of the training series and while it's extremely helpful I'd recommend Pluralsight and the MVA Videos. Along with the Help in powershell and the About help info.