Just that really. My ten month old seems to all of a sudden understand when we don't want her to do something / seems like she's testing boundaries etc, and I have realized that all of the reading of baby books I did while I was pregnant/obsessive googling during the early months has done nothing to prepare me for this. Any recommendations for books you found helpful to understand/get through the early toddler phase (ideally relevant to older babies and up), particularly on setting boundaries, discipline etc and the reasons why they do what they do.