What are the most commonly used functions in Excel?
SUM functions. Probably the most frequently used function in Excel (or any other spreadsheet program), =SUM does just that: It sums a column, row, or range of numbers—but it doesn't just sum. It also subtracts, multiplies, divides, and uses any of the comparison operators to return a result of 1 (true) or 0 (false).
How should I spend my salary?
It's critical to save first and then spend rather than the other way around. Ideally, you should be spending 50% of your income on necessities, 15% on personal expenses and 35% should be going into savings.