There is only one ribbon. It has lots of tabs on it, which is what you may mean. There are seven standard ones. They are Home, Insert, Page Layout, Formulas, Data, Review and View. Others can also be added.
ribbons
Excel 2007 does not have menus, but has what are known as ribbons. The various options are grouped and displayed on different ribbons. Options that would have been in menus and toolbars are displayed on the ribbons.
Ribbons.
Normally the Standard and Formatting toolbars are shown in versions of Excel before Excel 2007, which replaced toolbars with ribbons.
It's been a while since I used Excel 2003 but I believe there are a maximum of 256 available columns.
Keyboard shortcuts for menu options, like those used before the introduction of ribbons.
There are a variety of awareness ribbons available to purchase and show support. The first ribbon introduced was the yellow ribbon. Other ribbons promote awareness to things such as breast cancer, military, and mourning.
One can purchase badge ribbons from the Ribbons Galore online retailer where they have many such ribbons to buy. One can also get them from eBay and Name Tag.
Ribbons can be used for many different things. You can make bows out of ribbons. Ribbons are often put on clothing and wrapped around gifts. In some cases ribbons are used as a sign of support.
This question is not clear. If you are asking what kind of formats are available to format the contents of cells in Excel, then there are many possibilities. Some of the formats available are bold, currency, time, date, italics, centered, etc.
Microsoft has some excellent free Excel tutors available. See related links for list of Excel subjects available. Recommend you start with the tutor entitled: "Get to know Excel 2007: Create your first workbook"
Excel 2003: The Default is 3, but limited to available computer memory. http://office.microsoft.com/en-us/excel/HP051992911033.aspx