Starting a blog is not as expensive as you may think. There are many free and inexpensive platforms available to help you get started. Some popular options include Blogger, WordPress, and Tumblr. Once you have your blog up and running, there are a number of ways to make money from it.
You can sell advertising space, create an affiliate marketing program, or offer content for sale. The best way to find out what will work best for your blog is to experiment and see what brings in the most traffic.