Pearl has a new book out: Causal Inference in Statistics: A Primer (with Glymour and Jewell also as authors), already available on Kindle and paperback coming out the 26th. You can find the Table of Contents and chapter previews here.
At 150 pages, 4 chapters, and with homework exercises, this looks like the introductory causality work that I've wanted to exist for a few years.
Just ordered it. Thank you.
EDIT: Paperback isn't expected to ship until 3/8/2016.
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