I see that you aren't getting the exact information you need. First off, you need to be a little familiar with PHP to be able to customized one of the page templates.
The previous poster suggested using a child theme, that is because it is the best practice to do so when modifying template code. That said, when you create a child theme and all that is required for that... then you can modify the page.php code to selectively avoid the meta data or date/author data from the display.
In other words in the code you will need to test for a certain page number or numbers, then skip around the code you don't want to show, all other pages would display the same.
There are examples of doing this in various places around the docs. An alternative is to use an existing theme that already gives you control of this on a page by page basis. It's a cleaner way to do this, as you don't need to code a custom template. I can show you one if interested.
Those are the two ways to do it on your own. Any further help would probably cost you a little consultation fee from a WordPress Ninja programmer, because your asking for a detailed solution to your particular situation, but you're getting generalized answers because that is all people want to say without having to take more time to research it for you.
I've done this very thing both of these ways. It's very doable, once you understand where to poke.
Hope this helps.