I got into it by watching DAS (destroyallsoftware.com) by Gary Bernhardt (creator of the WAT presentation), it has truly shaped me into a better developer. Not

I got into it by watching DAS (destroyallsoftware.com) by Gary Bernhardt (creator of the WAT presentation), it has truly shaped me into a better developer. Not only will you learn how to practice TDD, but so much more: refactoring, unix tools, OO-principles ... I could go on forever, it's really a great series.