A little extra information on absolute addressing. You can place the $ sign
just in front of the column like this $A1 and then you can copy the formula
right across to any column and it will always address column A. However, when
you copy the formula down in the other columns, while it always addresses
column A you will find that the row number changes.
The above is handy to know if you have a value that is always in column A
for the formulas across the worksheet but it is a different value for each
row.
The same with the row numbers. You can use A$1 and copy a formula down and
it will always address row 1. If you copy the formula across then the column
id changes but it will still always address row 1.
Hope this little bit of info helps.