I finally learned how to change the shutter speed on my camera. I'm mostly experimenting, seeing how different settings affect how a photo turns out. My camera has a shutter speed from 10 seconds (the shutter will stay open for 10 seconds, letting in lots of light) to 1/8000 of a second, which requires a lot of light, or the picture will turn out dark. You can find much better explanations elsewhere, I'm sure.
Anyway, I played around with the shutter speed settings, and can really see the difference in light. At the lake, after the thaw, the water was running.
Definitely too much light/shutter speed too slow
And eventually, too dark/shutter speed too fast
Next, I tried some indoor photos with running water in the sink. A slow shutter speed will make water look silky smooth, while a fast shutter speed will seem to freeze time.
The more light, the brighter and sharper the background came out, too