The Poser 11 video set is excellent. But if you need books there are some. They're rather old now, but the Internet Archive has scans of good introductory books. Such as Practical Poser 8: The Official Guide; Poser 7 Revealed: the e frontier official guide; The Art of Poser and Photoshop: the official guide. They'll still be valid in terms of the basic Poser UI and workflow.

For scripts advice, you want this link.

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Learn the Secrets of Poser 11 and Line-art Filters.