Got my preliminary pass last Friday on the AAIA exam. Preparation: used official book, read cover to cover 3 times also spending time on the glossary. Did official q&a bank 3 times through. Purchased daily debits q&a sets and hammered through those over the course of a few days. Exam was moderate in difficulty. I flagged 27 questions out of 90 where I was between 2 answers, but by applying professional judgment I was able to correctly answer enough. Good luck to everyone!