Introducing myself

I am learning, because my work all thinks we should all talk in English.
My native language is Portuguese, and I grew up in Brazil.
I enjoy play squash and running.

----

 Pretty good. Although the part about your work thinking you should talk in English, I didn't quite understand. Did you mean what I corrected it into? Also, instead of "talk in" you could say "speak" or "speak in."

Names are always capitilized. English is the name of a language. (Although, English isn't always capitilized when used as an adjective.)