Every online marketplace, from Etsy to Amazon, offers a shared set of advantages and disadvantages. The upside is that you get access to their network of shoppers—people regularly browse these sites when they need to buy something, so setting up shop lets you meet them there.
Writing is one of the fastest and most accessible ways to make money online. You don’t need perfect grammar skills or a padded portfolio to become a freelance writer. You can use personal blog posts, newsletters, or stories you’ve written in the past as samples of your work. Join the ProBlogger and Freelance Writing job boards to start pitching your services to clients. 

If you have your own products you want to sell online, you can set up the entire process through Shopify. They’ll help you set up an online store, including sorting out payment options, and even handle promotion and shopping for you.
Where consultants provide a plan of execution for clients, coaches help clients create a plan for themselves. When I started my financial coaching business, I thought I would mostly tell people what to do with their money and then they would do it. But I quickly realized that what my clients needed most was help overcoming limiting money beliefs and staying accountable to their own goals and plans. You can become a coach in any area from Instagram marketing to personal finances and business. Tools like Acuity and Zoom can help you book and meet with clients virtually.