I’ve found the explanation in SICP the most helpful one. It took several weeks until I could think in the basics of this language sufficiently fluently. http:/

I’ve found the explanation in SICP the most helpful one. It took several weeks until I could think in the basics of this language sufficiently fluently. http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-001-structure-and-interpretation-of-computer-programs-spring-2005/video-lectures/8a-logic-programming-part-1/ http://ocw.mit.edu/courses/electrical-engineering-and-comput... http://mitpress.mit.edu/sicp/full-text/sicp/book/node92.html http://mitpress.mit.edu/sicp/full-text/sicp/book/node92.html