Rows run horizontally (left to right). Columns run vertically (top to bottom). In a spreadsheet, rows are labeled with numbers (1, 2, 3…) and columns are labeled with letters (A, B, C…). When you combine a column letter and a row number, you get a cell address; like A1, B3, or C10. This is one of those things that sounds obvious once you know it, but it’s easy to mix up when you’re just starting out. This guide gives you a clear explanation plus a memory trick that actually s