Books for first semester

Judging from what I've read on facebook, student doctor, valuemd and
these are roughly the books that i need to get:

Netter's Clinical Anatomy
Netters Atlas of Human Anatomy
BRS Gross Anatomy
Langman's Medical Embryology
Histology, a Text and Atlas
lippincotts biochemistry.

Apparently, mainly anatomy has a need for text books since Histology and MCB rely mainly on notes taken in class.

Should I purchase the above books in the states new or on the island used, where i hear prices are as low as 5$?

On a side note, I'm thinking about all these books and getting apprehensive/nervous. Am I ready to study this much and this hard? This nervousness is good and will prevent me from becoming complacent, hopefully keeping me up to date in all my classes.