How you can make a blog...? There are many site's such as
- www.blogger.com
- www.wordpress.com
To make blog in blogger .com you should have to make a gmail account, or signup with an other mail account. First you select the title or topic on which you want to make a blog, then you will select your desired domain name if available. Now you can select the template of your site according to your choice.Then you start a post. Post is an article or essay related to your blog's topic , you can also make your personal blog and share it with your friends and online community. When you complete your blog you can register it with Google Adsense, Blogger is fully supported by Google Adsense and i will also suggest you that if you want to make a free blog online then make it with blogger.com.
Same as above you can make your blog with wordpress.com but the major demerit of wordpress.com is its not supported by google adsense. So for registering with Google adsense you should require some compulsory add onn as per requirement.