Tools. You don’t need much to work as a home-based freelance writer, but there are some tools that you must have. The most important will be your computer. Get the fastest Internet access that you can afford. It doesn’t matter what kind of computer you get. Just make sure you’re comfortable enough to spend a lot of time with it. Most clients will request that you submit your work as a Microsoft Word document, so make sure that whatever programs you use are compatible. In addition, because you’ll be spending so much time at the computer, make sure that you have a good work area with proper lighting. Some clients will want to be able to reach you by phone or Skype, so have both set up and accessible. You’ll need an invoicing program, such as Freshbooks, and a good bookkeeping system to keep track of sales, orders, and accounts receivables.
Another suggestion is leveraging the marketplaces out there. This is great if you suck at selling and marketing because you're tapping into existing traffic sources. Think: Amazon, iTunes for apps, podcasts, music, Udemy for info products, Zazzle for tshirts, Etsy for handmade things. There are so many marketplaces out there. I would honestly select a marketplace based around something you're interested in. Make some money there. Then create a course about your success and results and then eventually sell that course on your own site or platform, then proceed to reach out to bloggers, and podcasters to give them content, and create your own buzz. It's pretty simple to engineer your own success and fame, but it does take some effort.
How much will you make? I think my best month with Google AdSense was almost $5,000 over the last ten years. That amazing month blew my mind since it was actually near the beginning of my blogging journey. When you go from making zero to $5,000 in a month, that will rock your world. For me, it also got me even more excited because I knew there were other ways to monetize.