A Blog is a special website from where you can share your own thoughts and ideas, which is published on the web. There is no need of expert knowledge about any topic. You can easily add content, images, videos, news and more.
You can easily build a blog with Wordpress. It is the best platform for blogging purposes. It is very cost effective and there are a number of plug-ins and themes with which you can build a very attractive and customized blog.
I would like to share an online tutorial with which I learnt how to build a blog. You can check out http://www.openwebsitetutorials.com/1009/how-to-start-a-blog/, this tutorial is very easy to understand.