Hi Fran,
Welcome to the Q&A Board and the digital world!
Using rechargeable batteries is highly recommended for digital cameras. Alkaline batteries don't last long by comparison, but you should be able to take many more photos than 2 or 3 before the camera shuts off.
Check out if your camera has a power saving menu setting. To conserve battery power, many digital cameras shut off automatically. Some cameras let you change the amount of time before it shuts off.
In addition to checking this, ask if a friend or family member has rechargeable batteries and give them a try. If they work, then you know it's not the camera and
can buy your own charger and batteries. If they don't work, exchange the camera.
Here's some information about batteries. Also check the link about battery capacity.
http://www.digicamhelp.com/digital-camera-batteries/digital-camera-batteries.htmWe're right in the middle of preparing information about the types of battery charges. Hopefully, the article should be up within a week. Let us know how it goes or if you have further questions.