Using the computer

I　always use the computer, because it is so convenient. Sometimes　I　play computer games, for example playing sport games and horror games, I really like a it, I also type homework. I search information and send e-mail by using computer, It is contact my friends in foreign countries via sending e-mail. I usually watch music videos and movies on YouTube. I can learn English while I am watching too. But I do not understand how to use computer. I want to be able to type quicker than use to.