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, you're a TOOL I was using
to make my point.
The Big Bang Theory Season 6, Episode 18

It can be so helpful,
such a good TOOL.
Breaking Bad Season 5, Episode 8

Yeah? So? Be a TOOL.
The Big Bang Theory Season 2, Episode 2

...and tried to build
a nuclear reactor in the TOOL shed.
The Big Bang Theory Season 8, Episode 23

Somewhere between TOOL using
and cave painting...
The Big Bang Theory Season 1, Episode 11