The Folger Library's Shakespeare books are so far the best I have read when it comes to any Shakespeare play. The books are quite cheap at around $4-5, which is about a few dollars less than paperbacks of the same size.
The Folger libary outlines lines of the play in a very easy to read context, so it's hard to confuse who's saying what line. The book is divided into a format of the actual text on the right side of the page and a glossary of the terms on the left side. The glossary is one of the most exteremly helpful things I've come across and helps understand various terms, names, etc. Much easier than looking it up in the dictionary!
I highly recommend any Folger Libary's Shakespeare books, especially for students.