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Seven businesses, written out honestly

These are the businesses people sell courses about. Part one of every course is free, needs no account, and answers the only question worth asking first: is this real, and is it real for you?

Nothing here tells you what you will earn, because nobody knows that and nobody who says otherwise measured it. What each course gives you is the mechanism — why the shape of the business produces the result — the bill before a single sale, and a plain list of who it does not work for.