Look at "CheckMate" it comes in a pocket version, mine comes in an Iphone app. How verse are you in your Pharmacology? When I started in the ED, I anticipated what drugs I'm going to use in certain patient according to their presentation. i.e. EMS call with a pt coming in with SVT, what drugs would the ER MD will use..Or if it's an arrest... Amiodorone? Vasoactive drugs like dopamine or levophed, do I know the standard dose, how much is the initial dose, maintenance dose. I made sure that I can visualized myself performing each step of the ACLS, I reviewed one particular common emergency drugs for 2 weeks everyday until I can tell you it's half life, it's expected side effect etc... Of course you will not want to limit yourself on these stuff. ER is also now being used as urgent care by people. This simple steps will help achieve a certain comfort level working in an ED. Good Luck Gene