The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

What kind of DETOUR?
Breaking Bad Season 4, Episode 6

We took quite a DETOUR
from what I understand to be your thesis.
The Big Bang Theory Season 1, Episode 15

Took a DETOUR.
Game of Thrones Season 4, Episode 1

...my career trajectory
has taken a minor DETOUR.
The Big Bang Theory Season 3, Episode 1

Why don't we take
a little DETOUR?
Breaking Bad Season 4, Episode 6