ins and outs

Noun

idiomatic plural plural-only

(idiomatic) The details or fine points of something.

Japanese Meaning

事物の細部、詳細な部分 / 内情、事情

Before I start the project, I need to learn the ins and outs of the new software.

プロジェクトを始める前に、新しいソフトウェアの詳細や細かい点を把握する必要がある。

Sense（1）

(idiomatic) The details or fine points of something.

After a few months, you will know all the ins and outs of the system thoroughly.