There are a few different ways to post a blog on the internet. You can use a blogging platform like WordPress, or you can use a self-hosted platform like Blogger.
Both of these options have their own costs, but both of them also offer free accounts that you can use to start posting.
If you want to monetize your blog, you’ll need to pay for a hosting plan or for premium features on a blogging platform. However, there are many free blogging platforms and hosting plans available, so it’s not impossible to start a blog for free.
The main caveat to posting a blog for free is that you’ll need to generate traffic to your site. If your goal is simply to share your thoughts with others, it’s likely that you won’t need to worry about generating traffic.
However, if you want your blog to be successful and make money from ads or sponsorships, you’ll need to find ways to get people interested in your content.