There are countless blogs all over the Internet. Money is being made by some of us and some don't. Many of the bloggers use WordPress at the moment. You will need to make sure that your blog is secure.
I back up my blogs using a plugin WP DB Backup. If anything happens I will restore my website. I use WP Security Scan plugin that is free to scan my blog regularly and asks to be blocked by WordPress Firewall to secure your wordpress website.
Do not depend on your internet host - Many people depend on their web host to"do all that technical stuff for me", not realizing that sometimesthey don't! Far better to have the responsibility lie rather than out.
Recently, the blog of Reuters was hacked by an unknown hacker and posted a news article that was fake. Their reputation is already destroyed due to what the hacker did, since Reuters is a popular news site. If you don't pay attention on the safety of your WordPress 20, the same thing may happen to you.
Now we're getting into things. You must rename it to config.php and alter the file config-sample.php, when you install webpage WordPress. You need to set up the database facts there.
Do not use wp_ as a prefix for your databases. That default is being eliminated by web hosting providers but if yours doesn't, adjust wp_ to anything but that.