This tutorial demonstrates how to build a simple bar chart from a CSV file containing country population data. The code loads the data with `d3.csv`, converts the population values to numbers, and logs the parsed dataset to the console. The HTML page includes an SVG element and loads D3 v5 from a CDN, though the chart itself is not yet rendered in the provided code. The example focuses on the foundational steps of data loading and transformation using D3's `select` and `csv` methods.