Having a graduate law degree will always carry a distinct advantage especially when compared to merely holding a baccalaureate degree in legal education. For starters, a graduate law degree, specifically a Master of Laws title, is a good marketing tool since it gives a signal to prospective employers that you are well-versed in a particular legal field having mastered the same by taking up further studies.
Meanwhile, if you are already a practicing lawyer, pursuing a graduate law degree should prove to be most helpful if you plan to shift to another specialization. (1) This is not entirely uncommon especially when you find that the field you fall under right now is not one that you are excited in pursuing.
Since a graduate law degree involves a higher level of legal education, a basic requirement of the program is for you to hold a basic law degree, either an LL.B. or a J.D. as conferred by a duly recognized law school. (2). Apart from that, your academic records, along with several basic personal information, is a major consideration. In many cases, if your grades do not belong to the upper level ratings, your chances of getting a shot at earning a graduate law degree is a little slim.
In any case, if you hold the required law degree, you will normally be asked to file an application for the Master of Laws program if your plan is to take up further legal studies by earning a graduate law degree. The program has many fields of concentration but if initially, you find it hard to decide on what particular field you would like to specialize on, you can easily settle for the Master of Laws program with a concentration on general studies. (3) Enrolling under this particular program is quite helpful since it will present to you the many course choices that are available. From there, you should get to see which particular field interests you and consequently transfer to that program in the succeeding year.
You can pursue a graduate law degree program either full-time or part-time. The latter should particularly suit you well if you happen to hold a day job since most classes are usually during the evening. (4)
(1) http://www.law.capital.edu/GradLaw/LLMFAQ.asp<
(2) http://www.law.capital.edu/GradLaw/AdmissReq.asp
(3) http://www.law.georgetown.edu/admissions/llm_general.html
(4) http://www.law.georgetown.edu/admissions/llm_general.html#Full%20and%20Part-time