My name is Luis Ribeiro. I'm from Bahia but acttually I am living in Goiânia. [you could write Goiania, though.]
My name is Luis Ribeiro. I'm from Bahia but I am now living in Goiânia.
I work in the TI area and I need to use English daily. [though, I prefer this wording: "I work in the TI area and I have to use English daily/in a daily basis."]
When you say you need it´s impearative that you do that, perhaps you are forced to. Whereas if you say you have to, perhaps you work with something that involves reading or other kind of contact with the language.
I would like to take English classes, but at the moment it isn´t possible. Then I am trying (or I will try) to learn by myself and be in contact with English in a permanent basis.
My goal is to supplement my learning with the English Experts and improve my (*)skills with the wealth of information that I can find here.
*my (English) skills, it´s implicit here.
Let´s wait for further improvement, certainly there are room for betterment of the text.