You can use many different blog programs, but the two I would suggest would be wordpress.org if you want to host your own and use Googles Blogger for the free one hosted by Google.
Once you have a blog created, you can start posting information about things that interest you. If you don’t have anything to blog about at the beginning, don’t worry. I would set up some RSS Feeds on your blog.
You can then start planning phase two of Making money on line. It will take you a couple days to learn how to use your new blog. Once you are finished, come back here and look for the second step in making money online.