Go to.......... http://world.casio.com/qv/download/en/manual/ and look for the user manual that goes with your camera! There's a troubleshoolting sections located in every user manual ! Hope this helps!!!
Budget, Type of photography, skill level; all these matter. There are several different types of cameras but the most popular are digital and 35mm. digital are mostly point and shoot with some zoom features and are a great and cheap way to take decent pictures. That is probably the way you are going to go. Don't buy anything with less than 5 megapixel resolution, and budget for a memory card; a 128mb would do fine for most people. If you plan on taking a photography class your going to need to find a 35mm camera with real film. This is definitely more expensive but in the hands of the right person can make brilliant photos. PS. i have a casio exilm digital camera and it is pretty great. I've also got a Nikon SLR, and while nikon makes great lenses Slr is an awful format and i wouldn't recomend it.