Setting-up a blog site is way too easy. Here’s what you need to do:

1. Get a Domain registration and a hosting package. Domain registration is actually registering the name of your site. Look for a decent space (say 500MB+) and good bandwidth (like 20GB per month). 500MB is the space allocated on the server for your site related files. Bandwidth is the amount of data transfer that the server does from your site. For example, you have a 10kB file and 100 people view it, the bandwidth used is 10×100=1000kB. So, as you have more visitors, your bandwidth will deplete more. Get a Linux host if you’re planning to use open-source software (such as WordPress) to run on your website. Most Linux hosts have Perl, PHP and MySQL scripting/database engines available. These scripting programs (installed on your host server make your blog software work).
2. Give a site name and your details to the hosting company and they’ll register and setup your basic website for you. They’ll provide you with an admin access (username and password) to your site.
3. Now, it’s time to install your blog software. I recommend WordPress.
4. Login to your website’s admin access and create a MySQL database for use with WordPress. Note it’s database name, user name and the password you provide for the database access.
Read more……at Chetan Kunte’s blog