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Dont waste time copy and pasting, learn to work with the same data within multiple sheets. http://www.excel-tutorials.org/worksheets/how-to-input-the-same-data-i...
You re probably used to merging cells , but did you know that merging or concatenating columns for combining data is just as easy and useful. http://www.excel-tutorials.org/columns/how-to-merge-columns-in-excel/
Comments are often very helpful when it comes to the large amounts of data present in a spreadsheet. http://www.excel-tutorials.org/cells/how-to-insert-and-modify-cell-com...