This is not a manual for the faint hearted. It provides all the information you need for writing and referencing in APA style, and is rich in text with many subsections. If you need this manual for psychology studies, be sure to set aside plenty of time to review it prior to your first essays. It is a psychology essential.
For an undergrad psych student this is a necessity to own. However, I dislike that you have to use the Kindle app because I find it frustrating to use compared to other online apps. The content - fine, it is what it is.
The formatting could use some work to make it more small screen friendly but usable all the same. Won't work on an iPhone, which is a shame as it would be good to always have a simplified version of the APA Manual close by.