While the easiest way to navigate Google Spreadsheets is with your mouse, you can also use your keyboard to move from cell to cell in a spreadsheet. Table 3 details the key combinations that enable you to move around the worksheet.
Key(s)
Navigation
Up arrow
Move up one cell
Down arrow
Move down one cell
Right arrow
Move right one cell
Left arrow
Move left one cell
Tab
Shift+Tab
Ctrl+Home
Move to cell A1
Page Down
Move one screen down
Page Up
Move one screen up