If you're interested in the field of blog writing, and you want to make money from your work, you need to be prepared to work hard. There is no way to get rich quick on the internet, and websites that say you can are usually not accurate and may just be out to get content for free. Whether you want to write a blog for a specific client or you want to make money on your own personal blog, you have a few options.
If you want to make money off of a personal blog, you need to make sure that the content is something people will want to read. You need to have fresh blogs at least every other day on interesting topics. This way you might attract a group of followers who wants to read what you have to say. Then, after you've begun to develop your blog, you'll want to learn about putting ads on your blog to make money. This is called affiliate marketing, and when people click on your ads and purchase things, you can make money. Google and Amazon are some of the biggest affiliate marketing companies on the internet.
If you want to make money working for someone else, you might find that the means of getting money is similar. You'll probably be asked to implement ads into your blog writing, and then you'll be offered revenue based upon how many people view your article and your ads. You'll probably need to write more often if you write for websites such as HubPages or Squidoo, because you'll be competing with a number of other bloggers for page views.