Look, up in the sky, it's SuperRune! When it comes to digital camera shopping info, he's able to overwhelm and confound in a single bound. Rumor has it someone's in the market for a digital camera. Hope this helps.
http://tech.yahoo.com/qg/quick-guide-to-digital-cameras/digital_cameras
http://cameras.about.com/od/choosingacamera/Choosing_and_Buying_a_Digital_Camera.htm
An oldie - http://www.pcmag.com/article2/0,1759,2400,00.asp
http://www.pcmag.com/category2/0,1738,5,00.asp
http://www.pcmag.com/article2/0,2704,2209659,00.asp
http://www.betterphoto.com/digital/buying-best-digital-cameras/01-intro.asp
http://www.basic-digital-photography.com/buying-a-camera.html
http://www.pcworld.com/article/id,125645-page,1/article.html
http://reviews.cnet.com/digital-camera-buying-guide/
http://www.epinions.com/Digital_Cameras/show_~top_sellers
http://www.epinions.com/
FWIW, a client gave me an Olympus D550Z a few years back. Nice, but its drawbacks included:
a) poor macro shots (can't get closer than 7 inches to a subject, and I loved to do macro with my old SLR);
b) 3.0 megapixel (I believe you need over 7mp to produce photo quality shots);
c) voracious battery appetite that requires multiple sets of expensive rechargeables OR a very very very long extension cord;
d) incompatible with the OS I was using at the time. Meant I had to buy a SmartDisk Flashpath floppy in order to download pix to the PC. I bot the dirt cheap IOMEGA Floppy Plus a couple years later for a new PC. It accepts floppies and about 39 different types of flash cards;
e) flash is fixed in place with the only options being ON or OFF. This washes out close in shots unless I drape a tissue over it and/or aim slightly askew. Look for a camera with more flexible flash positioning.
Caveats -
a) if the old eyes can't see anything through viewfinders, a crystal clear LCD becomes critical, larger the better but they consume a lot of energy so memorize where the OFF button is located!
b) first decide what kind of photos you'll take most, then shop for a camera that handles that specialty best
c) fewer and easily identified buttons are better, menu trees (I hate the Olympus unintuitive tree) can be exasperating
d) OPTICAL zoom is a key number... DIGITAL zoom is a red herring because it uses algorithms to manipulate and fudge picture quality (like image editing software), and that inevitably produces grainy shots
e) prices continue to plunge, number of megapixels continues to rise - look for a number above 7 or 8mp to print realistic photo quality pictures. Make sure total MP claim isn't inflated. I seem to recall some mftr's using a number that included pixels outside the actual image size.
f) as with PC's, the camera you buy will be obsolete before you reach the parking lot