Looks like you're some foreign medical graduate and your medical education system greatly differs from that of USA so you must choose a quick review course which is very easy to understand and not very time consuming. I'll strongly recommend you to check KaplanMedical.com for online education on Step 2 and USMLEWorld.com for a good bunch of QBank. The best book to start with is First Aid for USMLE Step 2 CK. You can find it on Amazon.com.\nHope it helps\nBest of luck
what books to read and how to study for USMLE part2 medical licensing exam in USA?