I need help..

They say that posting a blogs is an easy way of making money. But how will I do it?My friends Janet says that I need to have a tasked but where should I get it? I want also to have a income through this website like my friends and other blogger too. I am aiming for this because this can he also a big help for my daily needs. My salary is not that enough for my daily living especially that I have already a growing up son.Maybe I will try this.Please give me some idea, suggestion or help..Thanks.