I am doing some research with NLP technology, but I did not use it before, so this technology is new for me and for you. But I have found some userfull resources for beginners and me.
Books
1.Natural Language Processing With Python (free); 2.Python Text Processing with NLTK 2.0
Package
1.http://www.nltk.org/ 2.https://pypi.python.org/pypi/PyNLPl/ 3.https://github.com/nltk/nltk 4.http://www.clips.ua.ac.be/pages/pattern-en 5.https://github.com/sloria/textblob 6.https://code.google.com/p/gachalign/