First Aid is NOT enough for step 1 as far as behavioral is concerned.
way too skimpy.
BRS behavioral is great because Fadem, the author, writes for the boards and BRS has questions that are very very very board like with awesome explanations throughout the book.
I read BRS behavioral before the shelf and there were several questions almost identical to the book questions.
there was NOTHING on that shelf that was not adequately covered in BRS and it is an easy, quick read.
later