Need to Learn Camera Settings

I don't know a single thing about photography.
While I appreciate the art, I'm not that interested in it. There are plenty of others around me who can take great pictures, so I don't have to be that good.

Then... I've been taking lots of photos at these parent meetup group events. And I post them to the site, but now I'm a bit embarrassed at my lack of skills.

One thing I really need to learn is how to adjust the settings on the camera. Since I don't have thousands to spend on better lenses, I should make the most out of camera settings. But I know NOTHING about 'em.

Is there a good site or book for beginners?
Something that can explain to a non-enthusiast?