if you are trying to get help on how to make your blog here: *Download a Blog script (Try WordPress its the best ) *Follow the installation instructions in the readme file given with the script .Install and your Blog is ready if this is not what you were looking for please make the question clear
You can either go on a site like wordpress and create a free blog if you don't want your own domain. You will end up with a url that's something like myblog.wordpress.com. WordPress and TypePad are probably two of the most popular. If you want your own domain, you will need to find a web host and install the scripts. You can find web hosting from many companies for $5.00 or less per month which should be adequate for running a blog. If you are using your blog as a marketing tool it is highly advisable to get your own domain name.
You can play with Word Press.com you can register and create your own blog's free, that's where i got to know Word Press, or you if you have gmail account you can sign in to www.blogger.com it's free to there are lot's of free hosting oand such sites you can play with ( when you start playing you develop your own strategy )