Spreadsheet Page Blog
Excel 4.0 First Look
Google Books has an old issue of InfoWorld, where you can read my "first look" at Excel 4.0: Excel 4.0's ease of use is sure to win converts. It's from March, 1992.
The active cell and selected ranges now include a small "auto-fill" handle in the lower right corner. To copy a cell or range down or across, you simply click and drag this handle. This technique is even intelligent. Excel examines the selection for words it recognizes -- such as January, Qtr-1, Monday, etc. -- and will extend the series for you.
I also raved about the right-click shortcut menus.