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I took the Edelman seminar — do I also need to look at the Penny book?

Whatever seminar or resource you're looking at, the same principle applies: people don't all start from the same baseline.

Short Answer

Whatever seminar or resource you're looking at, the same principle applies: people don't all start from the same baseline. Some already have a foundation — often from having gone through other ARDMS exams before — and others are starting from zero. What you actually need next depends on which of those you are, not on the specific pair of resources you're asking about.

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