For Excel 2007, it is the button that looks like a paint can tipped over. You will find it on the Home tab in the Font section.
Another option is on the Home tab in the Cells section, under the Format option (Format Cells | Fill).
It copies what is in the selected cell or cells at that time.
In a small pop-up window above the button.
Screen tip
In a piece of tip text that pops up.
f11 or alt f1
screen tip
It updates to display the most recently selected border style.
It allows you to combine elements of different styles together.
Yes, the comma style button is located on the ribbon in Microsoft Excel. It can be found in the Number group under the Home tab. Clicking on this button applies a predefined comma format to selected cells.
The Autosum buttons allows to you to total and average. It also allows you to do other functions.
Paste Special allows copying with or without formatting
sub-menu