For Facebook API Research and Questions, 'Facebook Stack Overflow' is Recommended
For researching or asking questions about Facebook API, I recommend using “Facebook Stack Overflow”.
Facebook has many API specification changes, so even when there’s Japanese information available, it’s often outdated.
So, if you can read English even a little, searching and asking questions on “Facebook Stack Overflow” can help solve problems quite easily, which is good.
That’s all from the Gemba.