Make sure that you understand this before continuing. Previously, personal computers were largely used by hobbyists. There is no audit trail, they don't keep a log of changes and who made them There is no inbuilt error checking, if you want to make mistakes, you can. Summary A spreadsheet is a popular number crunching application. It is useful for tasks involving repetitive calculations eg. budgeting, investment management, marks books, scientific simulations.
Spreadsheets allow people to create and work with simulations of the real world.
When a new spreadsheet is created, each cell can be formatted with font, style, size, alignment, text colour, text wrap. Columns and rows can be adjusted to various widths and heights. Formulas can be entered into cells and the result of each formula will appear in the cell. Most spreadsheets also have automatic calculation features which allows the selection of a function from a list, which saving the trouble of having to type in the actual formula. If you put data in one cell and then fill right or fill down, the spreadsheet will make a guess at what you want in those cells.