i'm assuming you're not talking about an FM shelf exam for a rotation. the fp boards did feel a bit like step 3 when i took them, with a couple of minutiae oriented questions reminiscent of step 1. If you want to study for the boards and you're at a residency program, just get old copies of intraining exams. the same people that write the intraining exams write the actual boards. some questions are actually recycled and if changed at all from the intraining exam it's only slight. it's also useful to scan the last 2 or 3 years worth of the American Family Physician to review clinical areas where you bomb on the practice tests. swanson's is ok for a rotation but i wouldn't recommend it for board prep.