I am worried about how difficult the questions related to the codes. The books are too thick...how to locate the right content and any calculation required to solve these questions? Any tips to deal with them? Thank you so much.
@Thuy Tran, just be as familiar with your codes as possible. In the practice problems you do that relate to any given code, tab or take note of where in that given code the equations/tables/guidance/etc. is given, so you will have it marked for the future. See if in there are certain parts of certain codes that pop up a lot in practice problem questions.
Of course, it helps to just be plain familiar with your codes. When I took the PE exam, I don't think I tabbed my codes any more than I already had for what I'd needed on a daily basis for my job. I wouldn't necessarily suggest sitting down and reading the codes, unless you have a lot of patience and extra time on your hands. I'd look to figure out more what you use in your work, and what appears in practice problems.
For OSHA remember it's only a few sections out of the handbook. Don't print the whole couple hundred pages. I took about 40-50 pages to the exam and the index.