I am looking for some insight from those who have taken Step One and who used Doctors in Training to prepare for it. Currently I am signed up for DIT and am wondering how essential it is to have the current 2012 edition of First Aid. I have the 2011 edition--I hear they only go through the most recent edition. For those who have taken the course is having the most recent edition vital or can you get by with a relatively new edition? Thanks