You should be able to turn your camera on, set it to "Auto" mode, and press the shutter. Presto!
Your camera is probably capable of a lot more than that, and to learn about those features, I suggest reading your user guide.
One accessory I recommend for most digital camera users are rechargeable batteries. Most digital cameras I've seen use AAs for power. You can find rechargeable AA battery kits (usually include 2 or 4 batteries and a charger) at Wal-Mart, Radioshack, or even grocery stores for under $20.
Your camera uses flash memory, either internal or through a small card inserted into the side. Flash memory DOES NOT lose data when power is cut off. So, changing batteries is safe.P lease note that once your memory card becomes full, you will either need to download the pictures to a computer or delete them.
For downloading pictures to your computer...
Windows PC: I suggest using
Picasa by Google (free) to download manage your photos. It just makes everything easier, downloading, editing, sharing, etc. First, install Picasa. Then, just connect the camera via a USB cable to your PC. Turn on the camera in "view" mode. Assuming your PC is running 2000/XP/Vista, your PC should instantly recognize the camera without installing a driver. Picasa should offer to begin downloading photos.
Mac: Plug in the camera, turn it on in "view" mode. iPhoto should automatically launch and offer to download the pictures.
Windows 98/ME: Your camera should have come with a disc that includes drivers and a photo download tool. Usually included photo software stinks, but its the most likely to run on Win98.
No computer: Take your camera's flash card to a local drugstore or department store. The person at the photo department can assist you with making prints from pictures on the card. With a
photo printer, you can make prints at home, without a computer.
Hope this was helpful!