hello dear, that's a very good idea. Pick your blog’s name and niche, get your bog online which is called web hosting. Having a proper hosting company to power your blog is one of the most important investments you can make when getting started. one of the best hosting & blogging platforms most of the bloggers use is WordPress and is hosted by Bluehost. though there are many platforms for blogging but 70% of people use Wordpress only. Dream host and host gator are the two best alternative blogging platforms. if we wanted to make money with our blogs Wordpress is one of the best and smart options. we can design our blog with a free WordPress theme. if you play ads through google Adsense by creating an account, they review it. it takes time before that your writings must be unique and creative. be ready more than 100 articles at least and earning depends on the rankings and traffic on your blog. all the best dear.