These videos offer an assortment of information about using MS Excel.
Some of these videos are a based on PowerPoint slide shows. In those you'll want to use "Pause" and "Play" to make it go at a comfortable speed.
These contain a lot of the same information as you would find in the Excel Review notes.
The information is just delivered in a different format.
Sometimes it helps to understand a new concept if you hear it explained in a different way!