To add to that, if you are a complete newbie to any data visualization, do not start with d3. If you want to make pretty charts programatically, using R/ggplot2 or Python/Seaborn is good enough. Even Excel is fine if you tweak the defaults.
D3 is good if your visualization benefits from interactivity, either with dynamic data adjustment or rich tooltips. But static visualizations are important too. (I recently restructured my workflow so I can output static images and interactive charts with the same code, which makes it the best of both worlds.)
D3 is good if your visualization benefits from interactivity, either with dynamic data adjustment or rich tooltips. But static visualizations are important too. (I recently restructured my workflow so I can output static images and interactive charts with the same code, which makes it the best of both worlds.)