If free is really crucial I strongly suggest checking to see if your institution has any books available online via the library (or even if the local public library does), or if there's a subscription to http://proquest.safaribooksonline.com/ available. I've found such resources very helpful in multiple areas.

Kaiti
Swiss Army Nerd

In reply to Re^2: Text Parsing Book by jedikaiti
in thread Text Parsing Book by micwood

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