I can't say what they teach in the Carib. I came to the US to do residency from Australia. Australian schools teach you to be a doctor, and not to pass an exam. However, I took both step 1 and 2 within the last 8 months. Both exams are very reasonable, and I did extremely well. All you need for step 1 is First Aid for USMLE Step 1 and Kaplan Q-bank. By the time you take step1 you should have already read the major texts for each component. Therefore, First Aid ties everything together. Also, even step 1 is becoming more clinically based, and you get very few straight forward questions. Most questions are vignette style. For step 2, I found the Blue Prints Series very good. Again, First Aid for Step 2 will tie it all together. USMLE World Q-bank is the best to use for step 2. Step 2 is very clinical so I hope you get top notch clinical rotations.
Just my experience!