Contact Terry Perez Director, AWS Certification Operations tperez@aws.org . AWS grades the Ohio Welding PE exam.
As far as format goes it was essay style (I believe it is the only engineering discipline that still utilizes this format).
For a list of suggested references look at the AWS Certified Welding Engineer information http://www.aws.org/certification/CWEng/cwenginfo.pdf . I borrowed many of them from the library read them and copied information from them.
Copy charts, tables graphics, from the references, into a three ring binder, eliminate the fluff, just take the good stuff.
References books that I had included; AWS Handbooks, ASM Handbook on Welding & Brazing, ASM Desk Reference, Casti Blue Book and a dictionary. Keep it light weight.
I had indexed three ring binders on Welding Metallurgy, NonDestructive Examination, a binder of many WPSs (that I developed over the years, SMAW, GTAW, GMAW, FCAW, SAW, P1 to P91 material), Arc physics and power supplies and other welding methods.
Know your references and notes forwards and back, index them for quick reference. bring a snack and something to munch on during the exam (m & m's etc.) and pack a good lunch. It is a long arduous test.
Good Luck!