Probabilistic Reasoning in Intelligent Systems (1988) [pdf]
cogsci.northwestern.edu
cogsci.northwestern.edu
In contrast, Norvig's AIMA book has a chapter on the subject (bayes nets) which is confident and compact. Start there.
Still I like this book and have recommended it.
* Building probabilistic graphical models with Python (Karkera)
* Mastering probabilistic graphical models using Python (Ankan)
* Probabilistic Graphical Models Principles and techniques (Koller)
Having skimmed (just started reading them) I'm very excited to continue to delve into them.