The SERM is useful as an introduction to lateral. It was an excellent reference for the PE Civil/Structural PM. It was also my only AASHTO reference for both days of the SE exam. In any case, it's a good start - work all the lateral problems and reference the accompanying code sections. Highlight/tab as necessary.
http://ppi2pass.com/shop/pe-exams-80/structural-engineering-se-exam/structural-engineering-reference-manual-strm6.html
SEAOC, Vol. 1 is mandatory. Work each problem and read each code section, highlighting/tabbing as necessary. Vol. 3 was somewhat helpful, I didn't use Vol. 2, although I did look through it.
http://shop.iccsafe.org/seaoc-structural-seismic-design-manual-2009-ibc-vol-1-code-application-examples-1.html
http://shop.iccsafe.org/2009-ibc-structural-seismic-design-manual-combo-all-three-volumes-1.html
This book by Alan Williams was extremely helpful. I worked the general lateral problems several times in addition to the foundation problems. I also worked most of the material-specific problems. These problems are difficult (depending on your day-to-day engineering experience), but worth it.
http://www.kaplanaecengineering.com/kaplanAECengineering/menu_id%601209%60category_id%6054%60m_category_id%6054%60family_id%60116%60m_family_id%60116%60product_id%601009%60media_id%6035%60license_type%60%60from%60product_list%60product_detail.aspx
I thought this book by Alan Williams was helpful, although there were several errors in the solutions - esp. in the steel design section. However, the errors were pretty obvious and the steps to solution are there.
http://shop.iccsafe.org/seismic-and-wind-forces-structural-design-examples-4th-edition.html
PPI practice exam is a must. Take the morning section in an exam environment and time yourself. Review the answers and find the specific code sections that apply, highlight/tab as necessary. Solve the essay problems as many times as you can with a 1-hour time limit on each problem.
http://ppi2pass.com/shop/pe-exams-80/structural-engineering-se-exam/16-hour-structural-engineering-se-practice-exam-for-buildings-stbdpx.html
I also worked the example problems from the AISC Seismic Design Manual for Ordinary, Intermediate, and Special Moment Frames in addition to Ordinary and Special Concentrically Braced Frames and Eccentrically Braced Frames. Again, highlight/tab as necessary.
Use the example problems as guides to help you learn where important code sections are located and how to apply them.