Check out a free preview of the full Interactive Data Visualization with D3.js course:
The "Introduction" Lesson is part of the full, Interactive Data Visualization with D3.js course featured in this preview video. Here's what you'd learn in this lesson:
Ian begins the course by discussing a number of resources he's posted on his GitHub account. These include Tributary.io, Bl.ocks.org, and the use of reddit.com's data API. Both Tributary and Blocks are great places to post code when experimenting with D3. Ian also demonstrates the visualization project being built throughout this course