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.

Well, I'm hardly a new RECRUIT.
Game of Thrones Season 5, Episode 1

how a Night's Watch RECRUIT
became King in the North.
Game of Thrones Season 7, Episode 3

I can't let a RECRUIT
come north of the Wall.
Game of Thrones Season 4, Episode 4