One piece of advice for people taking the PE exam. DO NOT skip the engineering economics chapter in the MERM, CERM, etc. I nearly skipped this chapter thinking that there would be very few economics problems or that they would be easy as they were in the NCEES sample exam. Wrong. Thank God I spent three hours or so working the sample problems in MERM. There were probably 5 problems at least on the ME PE in April. They required at least a basic understanding of engineering economics principles (present value, future worth, break-even analysis, etc). You probably don't have to go through the entire chapter, but make sure you at least go through as many of the example problems as you can. Since most people either pass or fail the PE by only a few problems, economics may have been the subject that put me over the top.