Read the NLTK book available online for free here: http://nltk.org http://nltk.org The nltk tools them-selves might not always be state of the art (e.g. compar

Read the NLTK book available online for free here: http://nltk.org http://nltk.org The nltk tools them-selves might not always be state of the art (e.g. compare with the java libs from the NLP dept in Stanford) but at least you will get to know all the major concepts. Other interesting book, although not completely finished yet: http://www.manning.com/ingersoll/ http://www.manning.com/ingersoll/ Taming Text by Grant Ingersol, Thomas Morton and Drew Farris involved in the Apache Lucene / Mahout and OpenNLP communities.