This camera has easy access to the battery. The place in which you would find the battery also houses the memory card. Don't be alarmed, because there is a diagram on the inside that just incase you didn't know which went into which slot it can show you.
Flip the camera upside down so the battery compartment is towards you. Follow the arrows with your thumb to slide open the hatch to expose the battery and memory card.
This is what it should look like once it is opened. Here you can take the old battery out or take the memory card out as well.
The diagram shows the (-) side should be on your right, while the (+) side should be on your left. Insert the new battery and memory card here.
Close up the hatch and you're back to taking beautiful pictures!