Writing is one of the greatest time-honored home-based jobs, and editing isn’t far behind. Many employers look to hire content hire writers (a.k.a. content providers) who are experienced and can provide examples of their published work, online or on other platforms. If you’re just starting out as a writer, it’s possible to find entry-level jobs that let you build a published portfolio. As for editing positions that let you make money from home, hiring managers frequently look for demonstrated editing skills, or an area of specialty. Both writers and editors may be required to take skills-based tests.
The topic you choose must have enough depth that you can create a lot of content for it. This is important for building an authoritative site, for search engine optimization, and most importantly, for the end user. If you don't have enough content about a topic, you're not going to be taken very seriously as an authority on the topic and it's unlikely you can convince someone to make a purchase from you.