Sample papers in the first printing of the sixth edition contained errors. APA staff posted all of the corrections online for free in a single document on October 1, 2009, and shortly thereafter alerted users to the existence of the corrections in an APA blog entry.  These errors attracted significant attention from the scholarly community and nearly two weeks later, on October 13, 2009, the article "Correcting a Style Guide" was published in the online newspaper Inside Higher Ed that included interviews with several individuals, one of whom described the errors as " egregious ".  All copies of the printing with errors were soon after recalled in 2009 (including those from major retailers such as ) and all manuals currently in circulation are unaffected.
If you have never taken a psychology or social science class before, then you are probably accustomed to using a different style guide such as MLA or Chicago style. New college students are often surprised to find that after spending years having another formatting style drilled into their heads, many university-level classes instead require APA style. It can be a difficult transition, especially if you have to bounce back and forth between different styles for different classes. Getting a solid grasp of the basics and bookmarking a few key resources can make learning this new format a bit easier.