1. As everyone has said, it's about practice, but it's also about the post-test analysis. What are you getting wrong? Is there a pattern to the kinds of questions you're getting wrong? Most importantly: Why did you pick your answer? Spell out your reasoning and then compare it to the answer key's reasoning. Where is it different? Did you miss some key information from the passage (that tells you something about how you're reading the passage) or was it more a problem with your reasoning (that tells you something about how you're approaching the questions).
2.The MCAT really uses the same question stems over and over again: "which of the following claims, if true, would most WEAKEN/SUPPORT the author's claim"; "the author's attitude towards [subject] can be described as"; "If [x] were true, then how would this affect the author's argument". There are obviously some more, but these are some that I can think of off the top of my head. Once you get used to these kinds of questions, and how to answer them, it gets easier.
3.I hated Kaplan's "passage mapping" thing. It places too much emphasis on reading comprehension of a tiny portion, and not enough on actually understanding how the passage is working as a whole. One thing I liked about Kaplan's strategy was trying to answer the question in your own words first. I didn't do that for all of them, but if I was ever stuck between two answers, I would spell out my answer as fully as possible and see which of the actual choices best fit, or contained the key words in my answer.
