Have you ever visited or even reported a bug reports in Facebook’s Bugzilla?
I did neither of them when I first started learning Facebook Development. But now, I make frequent visit there. Besides reporting bugs, I also browse those existing reports. These reports can tell you what problems others had reported and how they had been fixed or what recommendations are givens.
Even for those outstanding problems, I think it is good to know them so that you can “avoid” them.
So, start reading the bugzilla! In case you find any invalid reports (as some of them are referring to deprecated APIs or features), please let me know!
Thx!