This document discusses various methods for entering and formatting data in Excel spreadsheets. It covers entering text, numbers, dates, fractions, and numbers formatted as text. It also describes using autofill to extend series, numbering rows automatically, and undoing/redoing data entry actions. The key steps are to select the cell, enter the data, and press enter. Numbers align right and text aligns left by default. Special formatting is required for dates, fractions, and numbers stored as text.