I'm Trying to Practice English {words in titles are capitalized in English, except for prepositions}

Hello.
I'm from Barcelona in Spain.
I was looking for a way to practice English and I found itaki.
My name is Manuel and I have worked all my life with computers*. I like programing, but usually, I work in the repair of computers.**
One A year ago, I was started to learning English and here I am trying to practice it.
Thank you for your comments.

*This is fine as written, but it sounds a little more natural to say "I have worked with computers all my life."

**Or "I like programming, but usually, I work in repairing computers".

I'm Trying to Practice/Practise English

Hello.
I'm from Barcelona in Spain.
I was /had been looking for a way to practice/practise English and I found itaki.
My name is Manuel and I have spent my working (worked all my) life with computers. I like programing/programming but usually I work repairing (in the repair of) computers.
One year ago, I (was) started to learn English and here I am trying to practice/practise it.
Thank you for your comments.

Your article reads well. The title is usually written with initial capitals. There are minor changes in spelling between British and American English dependent on your focus. Grammatically correct!