To blog is to write about things that you associate with. It can be anything from day to day activity or even, which happened in or across your life, or a subject, which is close to you. Blogging started about two decades back as a hobby for people, who wanted to express themselves in front of the whole world and have now gradually risen to a stage, where it is not only an effective way to express, but is also commercial viably to blog!
To earn from blog, you first need to have some sort of writing talent. If you want to blog yourself, then that is definitely required. However, if you just want to treat it as a business, then you can hire someone who can write good quality content for you.
Next, you have to promote your blog. Again, if you are interested in blogging, then you will have a network of bloggers with whom, you can share you blog links. There are also lots of places for bloggers, where they can gather around and socialize. This also helps is automatic promotion of their blog. If you do not blog yourself, then you can hire someone who is good at promotion and he will be able to promote your blog.
So, now you have a good blog and a popular one as well. Next come monetization. The amount of money that you did be able to make with a blog is not fixed It depends on a lot of things, but the primary ones are the traffic you receive and the way you promote your blog. The most important thing however is the quality of the blog. These things will only work when you have a good blog at the first place! So, a good blog can be monetize in lots of ways. Some of the popular ones are:
1. Showing ads from global sponsors like google Adsense, chitika, infolinks etc.
2. Showing independent ads from small business groups.
3. Selling products using your blog. This is mostly like affiliate marketing. You can also sell your own product or service using it.
4. Selling links and sponsored blog post on you r blog.
Apart from the above, there could be a lot of other ways to earn from a blog. You just have to be present and be in touch with eh market trends to do that. Opportunities for earnings keeps knocking at regular occasion and if you are present while it knocks, then you can definitely make god money from your blog.