In this post, you can find the links to the free online course on Natural Language that Professor Dan Jurafsky & Chris Manning offered on Coursera in 2012. It was a very successful and well-designed course. It is an ideal course to attend for those who wish to get introduced to Natural Language Processing and Computational Linguistics.
Watch the presentation to the course by Dan Jurafsky & Chris Manning: https://www.class-central.com/mooc/836/coursera-natural-language-processing.
The list of videos is collected here: https://www.youtube.com/playlist?list=PL6397E4B26D00A269.
Slides are available here: http://web.stanford.edu/~jurafsky/NLPCourseraSlides.html.
The companion book (by Dan Jurafsky and James H. Martin), which is currently being drafted for the 3rd Edition, is available here: https://web.stanford.edu/~jurafsky/slp3/.