Step 1: Understand your audience.
Before you start to write, have a clear understanding of your target audience. What do they want to know about? What will resonate with them? This is where creating your buyer personas comes in handy. Consider what you know about your buyer personas and their interests while you're coming up with a topic for your blog post.
A CMS helps you create a website domain where you'll actually publish your blog. The CMS platforms available for you to sign up for can manage domains, where you create your own website; and subdomains, where you create a webpage that connects with an existing website.
Some CMSs offer subdomains as a free service, where your blog lives on the CMS, rather than your business's website. For example, it might look like "yourblog.contentmanagementsystem.com." However, in order to create a subdomain that belongs to a company website, you'll need to register this subdomain with a website host.