Keep in mind that there are "publishing services" (vanity publishers) that will be delighted to charge you $$$$ to "publish" your work. I regret that I used one to publish four books over a decade ago. Since last October, I've been trying to get this vanity "publisher" to take my books off online retailers. But they don't return voice messages, etc. All they're interested in is the money I paid them long ago.
Probably the best deal for someone wanting to self-publish in paperback is CreateSpace. I've used them three times and have been satisfied with their service. The service itself is free, but CreateSpace offers various services, such as editing, formatting, or cover design if yu don't want to completely do it yurself. However, you might want to pay for an editor or cover designer on your own.
In 2013, I decided to republish my 2001 self-published novel, Patches on the Same Quilt. I used a template I'd downloaded and filled in the information. I found the process a bit tedious, but doable.
It was easier doing the second novel, Them That Go. Again, I had some help from my friends.
For My third CreateSpace project, I recycled and repackaged some stories I'd vanity-published under a different title in 2003 to produce Miracle of the Concrete Jesus and Other Stories. (Yep. More help from my friends!)
I've also done Kindle ebooks of all three of the above books, but that's another story for another blog-post.
If you're interested in in learning more about CreateSpace, here's some info I handed out at a recent author presentation I did: