Assuming you already know how to open Excel to get an initial blank spreadsheet and want to open an additional blank worksheet within the same workbook, you would click on the next available blank tab at the bottom of the screen or use the keyboard shortcut Shift+F11.
at the bar at the bottom right click on any of the sheets and select insert sheet
What you will see is a blank worksheet, which is a spreadsheet document in Excel.
File, New, Blank workbook
From the Numbers File menu select New From Template Chooser.... And then select the Blank spreadsheet template.
Click on Start > All programs > Open office > Calc. That will open a blank spreadsheet for you to start using. If you're referring to a particular function - drop me a note via my message board, and I'll try to help.
its no file new
worksheet in the insert menu
External means outside. An external spreadsheet is a spreadsheet that is not located in the spreadsheet file you have open at the moment.
There is no special name for them. They are just blank cells or empty cells, or whatever you want to call them.
Describe the process to insert some blank rows at the top of your spreadsheet
Double click on the spreadsheet file (assuming you have the spreadsheet application loaded on your computer).
No - it defaults to a blank work-sheet. If you want to open a recently saved piece of work - simply select it from your Recent Items list in Windows.
Yes it is. It is a free and open source spreadsheet program.