I feel like an idiot but...

I keep seeing references to WP Default Media Manager. Like, "With WP Media Folder life is easy, you can manage files, images from the native WordPress media manager." Just what do you mean by "native WordPress Media Manager"?

I've been reading the presale questions, and people talk about existing folders. Somewhere I read that your uploaded images can (without WP Media Folder) be stored in folders by month and year...

I'm SO confused. All I have is a Media Library filled with hundreds of unsorted images that is driving me batty. I want to create a very large image gallery and I'll be damned if I want them all distributed into the single mass of images.

I've looked at the video and the online demo and this looks like the answer to a prayer - if I just understood the basic terminology!

(I'll admit part of the problem is that I really hate WordPress, so learning new things about it is difficult for me. I'm an HTML girl and despise WYSIWYG, but HTML has gone past my knowledge level and left me behind, so WP is what I'm stuck with now. Someday someone will write a tutorial I can UNDERSTAND about creating child themes and then maybe I will be happier.)

So that's my idiot question - what are you talking about?

Thanks.