What exactly do you want to know about excel?
Excel has 2 main features. It is a spreadsheet program that ha
database capabilities and it has a built in "programming" language.
You can "learn" the spreadsheet by just "playing" with it. Think o
something you do with mathematics on a regular basis by hand, the
"translate" that into Excel.
Use the help feature, it is usually pretty good and informative
although it does leave a little or a lot to be desired (depending o
the function and the version of Excel).
You may want to obtain a book about Excel (sorry, I know of none off o
the top of my head) from the library or a bookstore (I recommend th
bookstore, that way you can use it forever and mark it up with notes
etc.).
Programming Excel is a relatively easy jump from there, although i
requires much more time to learn