Sort of...The second link (which ulitmately links back to one of the support pages here at wordpress.org) talks about how to pull one category to display on the index page-- BUT, the post doesn't make clear which index page it's talking about-- index.php that is wp blog homepage on my site, or my site's inex.html file. I know that WP has an index.php file.
I moved wordpress to the "blog" directory on my webserver. So I have an index.html file in the main dir that is my site's homepage (not the blog homepage), with a link to the blog index page (or, "../blog/index.php").
What I want to do it display the most recent post (which ever category; doesn't matter to me right now) on my site's homepage; it will also be displayed, of course, on the WP index (index.php, within the blog dir).
And I know that if there is some PHP code I can include in my site's main index, then it will become a ".php" file.
Is that clear?