Student books(online)

Common Simple Emergencies
NCEMI from Buttaravoli & Stair
http://www.ncemi.org/cse/contents.htm
Incredibly simple and short complaint based reference (good for in shift read)(like an idiots guide to EM)

 

Emedicine-  emergency medicine
http://emedicine.medscape.com/emergency_medicine
Simple but informative online reference

 

Emergency Medicine Clerkship Primer
Published by CDEM (Clerkship Directors in Emergency Medicine) http://www.cdemcurriculum.org/assets/other/ms_primer.pdf
A fantastic reference on how to do well on the clerkship and how to set up a career in EM.

 

 

The Gist of Emergency Medicine
Micheal O Hebb online book
http://erbook.com/
Cool but odd book with as much philosophy and common sense as medical information