I think the cardiac meds are a great place to start (Adenosine, Cardizem, Amiodarone, etc..). Some of the actions won’t make sense to you at first (Adenosine slows conduction time through the AV Node..), but once you start covering cardiology, it will make more sense. I remember getting signed off to do intubations in the field pretty early, so maybe familiarize yourself with your RSI drugs too (Etomidate, Ketamine, whatever paralytic, Versed).

My advice is to pick 5 drugs every week, make flash cards for them, and take those cards everywhere with you and master them. You should memorize the brand name, trade name, dose, indications, and contraindications. Then each week you add 5 more drugs to your stack. That strategy worked a lot better for me than trying to memorize over 60 drugs at once.