Here's a link to a site that describes the top 11 FREE blog sites, and tidbits you should know about them:
http://stylecaster.com/best-free-blog-sites/
If you're going to be a "success" at blogging, you need to have something to say, at a minimum, once a week, if not more often. Once you get set up, and get a "following", you may want to consider having ads on your site. You get paid so much per click - this varies by ad stream provider.
I had a blog several years ago... but got tired of it, as I'm too ADHD to stick to just one subject for very long. I personally tend to go in "cycles" as to what my current primary focus is on life. Right now, it's quilting... and fixing up our farm that we bought last year. I also now have two grand-babies, so as they grow old enough to come stay on the farm for a couple weeks at a time during the summer, that might would take center stage.
At one point,I was couponing... horse training... quilting... and gardening. With that much stuff going on, a blog would loose "followers" because there's not a single primary focus.
Good luck with both your search as well as the blog itself!