One other thing...batteries.
You camera probably has AAA or AA batteries.
The trouble is that digital cameras go through batteries very quickly (the screen on the back is the worst culprit) and this can be very expensive.
Consider buying re-chargable batteries and a charger.
You can reuse AAA and AA batteries over and over again by recharging them. You can buy re-chargers (with batteries) at places like Argos.
Here is an example:
http://www.argos.co.uk/static/Product/partNumb er/9800782/Trail/searchtext%3EBATTTERIES.htm
Make sure you buy one that supplies the same batteries as your camera, AAA or AA for example.