I feel like Micro Made Rid Simple is MONEY on antimicrobials. The 007 cartoon is particularly memorable (but you need to add a "swinging, MEZmerizing watch" for mezlocillin ). Seriously though, the text and charts are awesome for drugs.
You basically have to keep looking at the different classes until you've memorized them. 🙂 Remember basic representative samples from each class, then learn the ones that deviate.
You mean drug of choice for a given disease process? You don't really need to know that kind of information for Step 1...more the mechanisms of action, common indications for THAT CLASS of medication, common side-effects and contraindications.