For the morning, I used the PPI practice exam and the six minute solutions. I found the extended problem book to be too in depth for gaining speed, definitely a good tool to invest extensive study time and understand a concept completely, but geared a bit toward buildings. The Structural Engineer Reference Manual was useful as well as the PE PM Structural book and even the structural section of the Civil Engineering Reference Manual. The NCEES practice exam is valuable as well and I found it to be a good indication of the real exam as far as timing. I did find a few errors in this book though. (As an aside, while annoying, finding errors can be a great way to fully understand a topic. Study with an eye out and look up anything that seems off.) I also used the Bridge morning problem book by David Connor that is now also available on PPI. This is a great resource and has some of the best solution explanations I have seen. I did the 6 minute solutions, PPI Exam, NCEES Exam, and Bridge Problem book 3 times each, at least 10 days apart. I indexed every problem two ways, once by book and once by topic so I could easily find similar problems on the exam. I kept this index in a small binder that I used along with whatever reference I was using.
For the afternoon, I only took vertical this time, but found the Concrete and Steel Superstructure examples available from FHWA were good to study those two problems, although the codes are out of date so I went through line by line and updated where necessary. The CalTrans design manual is based on the 2012 AASHTO (like the exam) and was very helpful, but there are some CalTrans special modifications that do not apply to the exam. I used an MNDOT example to study the culvert, retaining wall, and abutment design that NCEES publishes as content for the other PM problem. The FHWA examples touch on some of these components as well. I went through these examples, tabbed relevant sections, cross referenced codes, and entered the page number in AASHTO next to the section number listed in the example. I found having the page and section helped with speed and the exercise of doing it allowed me to focus on reading through AASHTO and the examples.