How do you get the camera to charge? I put in new batteries and it still says battery low and shuts off. I have plugged it into the computer and it still won't charge. It won't even turn on.

Some camera will not turn on (Turn on but not take pictures etc) when you plug it in USB, it will only communicate with the camera PC suite software to transfer pictures.

Regarding the battery, if your camera has mobile phones type lithium ion batteries then you can either charge these batteries outside if you have a charger for them or put the battery in camera and plug the camera with its charger that came with it. Its just like charging mobile phone.

If your camera uses AA size (pencil cell) batteries then you will need to either buy Duracell batteries (or any other good Alkaline battery, Duracell is good) and throw them when they stop working or

Buy rechargeable AA size Ni-MH or Li-Ion batteries with charger. Charge the battery with its charger for at least 12 hours before first use or follow the instruction written on battery pack.

I think you are either using normal carbon AA size batteries that are used in clocks or toys, these will not work in digital camera.