I actually didn't prepare for this section at all. maybe did two practice tests in my three months of prep. I find it natural for me. But what i did do was read the first two paragraphs before even looking at the ques. then I'd see what the first ques. was about and if I hadn't read about it, i'd continue reading till i found the answer. then i'd go to the second question and if i'd read about it i'd answer or back track to where i read it. I didn't find alot of inference questions maybe 3.