I finally just had to install a new WordPress version, even though I wasn’t upgrading. It didn’t affect any of my work on the website, but I was very nervous during the process.
I set it up as an RSS feed, but it looks like you’ve been at it long enough that you’re just trying to get customers for your golf shirts. Cute blog, though.
In the box in the right-hand column where the “Publish” (or “Update”) button is, you have a “visibility” option. If you select that, you see an option for “password protect”. You can set the password from there.