Visualizations play a key role turning data into insight

It's hard to see what's going on with raw data
Good visualizations should be focused on how the data can inform the goals you have for your analytics.
Modern visualization tools can use interactivity and dynamism to allow exploration and digging into details while retaining an overall view.
A good way to learn about visualization is to explore examples of different approaches.

This "periodic table" is an interactive display that's a great source for inspiration in using different visualization techniques.

d3.js is an important tool for building visualizations.
d3.js is a framework that allows binding from javascript data to DOM elements, particularly valuable for creating dynamic svg visualizations.
This gallery shows many interesting visualizations built with d3 and acts as inspiration for both visualizations and implementation techniques.

Explore the possibilities