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.

You just e-mail and text and Twitter...
The Big Bang Theory Season 4, Episode 1

Yes, how did we live before Twitter?
The Big Bang Theory Season 2, Episode 23

out the danger of posting
his location on Twitter.
The Big Bang Theory Season 7, Episode 14

According to their Twitter feed,
they're out of sunblock,
The Big Bang Theory Season 5, Episode 1

go back in the archive of his feed
until I found his Twitter handle.
The Big Bang Theory Season 9, Episode 10