Lawrence--principles of gen surg and princ of surg subspecialties is a good text reference.
NMS Surgery is popular for studying for the shelf.
Surgical Recall is essential for daily pimp sessions.
An old anatomy atlas (netter?) may be useful in preparing for a case.
Not for 'studying' but for ward survival:
Since you're just starting out, you probably will find Maxwell cards essential for deciphering lab value abbreviations and medical note (op note, post-op, pre-op, progress notes) formats.
Consider Sanford Abx guide and a Pocket Pharmacopeia---I often have to leave my white coat hanging outside the OR suite (no white coats allowed in ORs) and don't want to risk getting my PDA stolen while I'm in on a case.
I know there are entire threads on what to carry in your pockets third year---you may want to check it out via an SDN search.