Correção de texto sobre Rotina em inglês

Hey guys, one more help please

On business days, I usually wake up at 6:20 am. Then I go take a 15 minutes shower. After this, I take a breakfast. At 6:45 I leave home to get a bus to the university. In the way to the university, I often read a book - sometimes an English book.
When I arrive at the university - usually at 7:45 - I stay in the ground floor talking with my friends. At 8 o'clock we all go up to the classroom. We stay in there until 09:40 when we have a breaktime. After the breaktime, we go back to the classroom, remaining there until 11:40, when we - finally - return home.
After lunch - which is usually at 13 o'clock - , I go to the computer to study English and chat with my friends. I remain in the computer until 19 o'clock, when my brother arrives and take control of the computer. Then I watch TV until I have dinner.

is anything wrong?

Thanks