Find five grammar mistakes and correct

Find five grammar mistakes and correct 
Like most people, I turn on my laptop play as well as to study. At weekends, I go to my favorite chat and I chat. Sometimes, I spend hours online and I often make new friends. My mum doesn't go shop anymore. She likes buy everything online. When I want to improving my English, there are a lot of great website vocabulary games and practice exercises. I usually score more points than my sister!