Of course this is just my own personal interest, you may be a keen amateur photographer, a budding cake decorator or want to write about travelling across Australia. So, carry out your research online by looking at different websites in Google and even on social media sites such as Facebook or Pinterest to see where the money making niches are, where the people are and if these niches are growing or shrinking. It will save a lot of heartache later down the line.
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.