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- The website has many examples and documentation about the tool.
- A free book about d3.js and also some JS fundamentals can be found here.
- There is an udacity course for d3 as well.
- Another course can be found on here.
- A fast and condensed tutorial has been made by square.
- A short cheatsheet with all the important functions is available here.
- Some cool video tutorials can be consumed here.
- There are also some slides by the creator of the library.
- A highly interactive workshop that let's you code from the start is located here.