we have found a number of books helpful at getting over both the straight forward, and the not so straightforward things
if i were to order them in ease of parental viewing, it would be 2,1,3. bb and i have read 2 comfortably together, sb and 1 i think are a good age match, i bought 3, and gave it to her so she could read it, but think might want to pre-read before you decide