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.

No USER prints
or anything.
Westworld Season 2, Episode 5

I'm telling you, that girl is a USER,
skating through life on her looks...
The Big Bang Theory Season 2, Episode 19

It gets the USER
insanely high.
Breaking Bad Season 2, Episode 1

YouTube changed
its USER interface
The Big Bang Theory Season 7, Episode 1