As a first year student of undergraduate law course, I found Mindy Chen-Wishartu2019s Contract Law very useful. Similarly, if you can get your hands on Common Law Libraryu2019s Chitty on Contracts, it can be very resourceful.However, there are various books dedicatedly written for construction/interpretation of contracts written by Kim Lewison, Steven J. Burton and Gerard McMeel among others.Another kind of books that may be useful are those pertaining to drafting, conveyancing and deeds.