I Recommend: Worlds Best Intro to TDD (J.B. Rainsberger)

Definitely worth every penny: The WBITDD series of jbrains. He develops a small point-of-sale system, including hardware. Possible approaches, design alternatives, and much more are discussed and most important of all: You get to see some hands-on TDD.

There's a preview available. Decide for yourself if it's worth spending money to get access to the entire thing:

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