I concur with CKERINS I utilized PR on metallurgy and engineering textbooks as I prepared for the Professional Engineering Exam. I PRed 40-50 books on the topics that I thought would be on the exam.

I start by building a solid foundation glossary of relevant terms if one is not currently available. However if a glossary is available I PR and skim the glossary to add a few mental hooks. Finally, I PR the technical texts and general study notes.

BTW, I passed the 8-hr PE exam with the highest score in the state.