If you want to really make money with your blog, you need to create a mailing list using one of the billions of email service providers out there. I use and love ConvertKit, but if you are just getting started and don’t understand sales funnels, sequences, or tagging you might want to start off with something simpler and free. If that is the case go with MailChimp where you get the first 2,000 subscribers free or Mailer Lite.
If your niche doesn’t allow you to promote or build premium products (anything over around $100 per unit) then think about getting a solid mix of offerings and building it up over time. I remember Darren Rowse saying that initially Amazon Associates was a really small source of income but over the years it has really started to add up. Think eBooks, affiliates, consulting, books, etc. and you’re starting to build an income stream.
I know many personal finance writers with blogs that track the financial mess they got themselves into. They don't have financial degrees, but they are doing very well for themselves and help many people with their experiences. Many times, readers just want to hear from you, follow a real person's journey, read about how a real person made it through a problem, and so on. This is a great example of why degrees are not always needed.
The answer is yes. However, I would caution against it. The reason is, when you use a free service, you don’t have as much control over your blog—the free service does. This can be risky, especially if you will rely on your blog for income. A self-hosted WordPress blog is my recommendation and can be started very inexpensively. See my step-by-step tutorial here.
Write content. I like to write an article from beginning to end with no breaks. It may take me an hour to write an article or I may be at it all day. Sometimes, content does span a few days, but for the most part, I like to finish a piece of content in one sitting. I then hand over the content to my editor to fix anything from grammar, punctuation, to the general flow of the article. The only thing she doesn't edit is my monthly income report.