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Lib, if you want an education in the language of the law, a great place to start is with a book by David Mellinkoff, The Language of the Law. It is a “scholarly treatment of legal language from its earliest days until the 1970s.” It’s also fascinating reading.
The same author has a dictionary accessible for laymen of legal terms, and a book perhaps more pertinent to the underlying theme of this thread: Conscience of a Lawyer.
Nota bene: I am not a lawyer, but am through my work well-read in many aspects of the law. Certainly well-enough acquainted with the field to avoid litigation if at all possible. 
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