This is an interesting question that many people will ask at internet marketing seminars for the simple reason that people are really interested in this idea. There are various different blogs that are popping up all over the internet nowadays that it really has gotten to a point where people that are interested in starting something from scratch and hopefully building that something up into something worthwhile have really gotten behind the idea of a blog.
A blog is simply a specialized content management system that you can use to make it easier for people to follow your thoughts as they appear in your head and are put down on paper. It is an excellent way to communicate ideas with others. What blogging has shown us however is that there are a lot of different people that are interested in the idea of being able to not only write on a particular topic, but also engage discussion with other blog owners on the exact same topic. That give and take that you see in the blogosphere on various different topics is quite overwhelming and it is this idea that makes it such a profitable experience.
If you are able to build up a loyal readership to your website, what you are going to eventually see is that the blogging for profit is going to be extremely profitable, because monetizing blogs is very easy to do. It does not take much extra time and may provide you with a very nice return. If you combine a text link campaign, a square link picture campaign, a pay-per-click campaign and a number of affiliate campaigns, you could easily be looking at an income of about $5,000 per every 100,000 page views that you are able to get. That's an effective CPM of $50, so it is definitely something worth looking into.
Here's another way of looking at it; blogs are the new content sites. When Google initially came out, the best way of doing things was to create content websites in order to make a lot of money from Google AdSense. As time moved on however and the interest in CPC waned, blogs became the natural way of doing things because of how easy they were to monetize from multiple sources of revenue. Blogs are going to be the way of doing business for a long time to come now and if you want to make money writing about something that you love to talk about, then blogging is definitely the best way to do it.
You start by getting a blog set up; either through a free service or by purchasing a domain and subscribing to a hosting service. Then, you can move on to promoting your blog and doing a whole lot more in addition to that and eventually you should see your page views starting to climb up out of the cellar. From that point on, it's smooth sailing. Blogging is not the easiest way to make money, but if you are willing to put in the effort it is arguably the most reliable.