Question about WP glitch ~ not urgent, just annoying

Hi all ~

I have several word press blogs and find it (for the most part) user friendly for those of us in the nether world between neo-Luddite and recovering techno-phobe. That would be me .

Anyway, the website in question is meant, at some point, to be my main blog where I talk about my successes and failures with multiple internet marketing/income stream programs and whatnot. I have a personal blog powered by wp, and other product blogs, all wp, and all of them will let me upload images to put into posts ~ except this one.

Oh, it says it's uploading, crunching, and so on ~ but it lies. When it's done going through the motions everything is there except the image

I thought it was the theme so I changed it today, spent some time creating an image for the post I wrote (shoulda checked first, I know), and it still wouldn't upload an actual image ~ not in png, not in jpg, not even a flipping screenshot of the image.

The header image that came with the theme is just fine, and I like it; it's season appropriate, but I'm sure I can probably replace it, no worries. It's just that I can't put images into my posts! I haven't tried it yet, but it just occurs to me that I might not be able to put video in my posts here either, which would really suck when I get to that point.

Has anyone else had this experience? And if you have, can you tell me how to fix it? in small, layman friendly, non-technical words of one syllable or less?

Thanks in advance for any help you can offer. Oh, this is the website, in case that matters: Renaissance Woman Ink

cheers ~
Rebecca