Personally, I don't think you need to purchase a Black's Dictionary. You have access to it thru Westlaw, as everyone else has said. I purchased the pocket version and used it maybe twice, only because I wasn't at my laptop at the time and was too lazy to get up and do it. If you feel you must have a copy, I would suggest just getting the paperback pocket version instead of a hardback copy. This way, if you want to take it with you to class for some reason, you can throw it in your bag.