Hi Mary Stella!
Go to the Homepage (Homescreen) and scroll down to the bottom and look for "Customize your homepage". Then you can drag and drop items. If there is something you don't want to see then drag it to the area on the left (Available for use). When you are finished you will only see what is left in the rows and columns (which seem to resize when other items are removed).
You don't have to save your changes and you can always drag and drop the other direction too. There is also an option to return to the default setting and start over. This is a great tool for customizing your homepage!
Also, it is not a function of Firefox but of Dave's programming.
