Idiom
ins and outs of something
Theme: DETAILS
the correct and successful way to do something; the special things that one needs to know to do something. (Fixed order.)I don't understand the ins and outs of politics.Jane knows the ins and outs of working with computers.
Idiom
ins and outs of somethingthe ins and outs of (something)
the details or facts about something.In a matter of weeks we all became experts in the ins and outs of airline security.Hong was still learning the ins and outs of the North American market.