I also used the Lynda course. Lynda is a paid service, however many employers will pay for this, thereby allowing you to get the 35 hours of training time for free. I believe the course was titled something like "PMP Exam Prep" or something along that line. It will say in the course description that it qualifies for the 35 hours of training needed. It's a series of videos (dozens of them) that basically walks through the entire PMBOK and explains the content that will be important to know for the exam.