〜について ni tsuite
〜について（ni tsuite）means “about; concerning; regarding”. Marks the topic or subject that an action such as speaking, thinking, writing, or researching is directed at. Formation: N＋について（修飾名詞には「についての＋N」）
about; concerning; regarding
N3Formation
N＋について（修飾名詞には「についての＋N」）
Explanation
Marks the topic or subject that an action such as speaking, thinking, writing, or researching is directed at. Equivalent to English 'about / concerning'.
Examples
Note
When modifying a noun, use についての (e.g. 日本についての本 'a book about Japan'). に関して is a more formal synonym.
FAQ
〜について — what does it mean and how is it used?
about; concerning; regarding. Marks the topic or subject that an action such as speaking, thinking, writing, or researching is directed at. Equivalent to English 'about / concerning'.
〜について — how do you form it?
N＋について（修飾名詞には「についての＋N」）
〜について — any usage notes?
When modifying a noun, use についての (e.g. 日本についての本 'a book about Japan'). に関して is a more formal synonym.