We will use the third edition of Professional Responsibility: A Contemporary Approach, an interactive West casebook. Register your book for e-copy access (see the inside front cover).
You will need the most recent copy of the Model Rules of Professional Conduct, but you are not required to purchase a hard copy. You may access them via Lexis or Westlaw, or from the ABA website button link above. If you wish to purchase a hard copy, you may do so at the ABA website.