A free blog is an excellent way of beginning your online empire. Costs are low and potential returns are high.
Getting started is easy. Just head over to www.blogger.com and setup your blog. Alternatively if you want a more feature rich platform, consider getting your own domain and web hosting so you can take advantage of freeware like WordPress. Many people start with Blogger then move to WordPress once they grow in confidence,
Pick a topic you are really interested in and which has good keyword traffic (these are the words people use to search for things in search engines). DigitalPoint has a free keyword tool that is very easy to use. You can also check your keyword (or tag) out at Technorati to see how popular it is. In general, the most popular keywords are the most profitable.
Now, all you need to do, is ensure you post something every day, then when the post is done tell the world that you have updated your blog. You do this by issuing a ping. Platforms like WordPress do this automatically. If you use Blogger then you must use a service like Pingomatic to do it for you.
As the number of your posts increase, search engines will regularly stop...