See @JeremyM's comment about blogging what you know about ideally. You probably want more detail about blogging that can be provided in a short post by anyone here. There is so much information out there about "blogging" by just doing online searches. I think if I wanted to do that, I would also look/study the blogs I enjoy most.
@tarek101 you mention wanting to work as a social media manager or proofreader. Take a look at remote.co, flexjobs, indeed, and other sites. Or just search for those job titles. Oh yes, also SideHusl.com. And then, always check what's available in the PennyHoarder work-from-home portal.