Perhaps its due to the fact that I learned this way during medical school and for the Step exams, but I value the information presented in practice questions a great deal, when it comes to studying for tests. Obviously this will only get you so far in practice, but for multiple-choice exams, it really helps.
Review the questions in Chantigian&Hall and old/new ACE questions forward and backward. That is a lot of information, and some of the information is presented on the ITE in a similar fashion. Be able to recognize the distractors as you are learning why the wrong answers are wrong. Read a decent review book the weeks leading up to the test (anesthesiology secrets is fine). You will need to read every day of your residency, but you cant let your success on the ITE depend on how many times you had Neuro or how long its been since OB, so you need a good review source, whether its Secrets, or Faust or whatever. Yes you can use Big Blue but information overload can be a legitimate concern. Study the way you are most comfortable.
If your primary problem is with "test-taking" as many people will claim, then put yourself in real life test taking scenarios with questions and while you are picking the right answer, explain to yourself why the others are wrong - check this against the explanations, do this over and over and over - you will learn topics not even presented in the questions just because they will be foundational for other things. A lot of this assumes that you are succeeding clinically, advancing appropriately and getting good feedback. In some cases, problems in one area can be indicative of deficiencies elsewhere (i.e. are you just not reading enough?)
For anyone arguing that the ITE isnt a big deal, I think thats hubris, no one wants to get put on probation, some places wont let you moonlight or take electives if your ITE scores arent up to par.