There’s some genuinely useful, practical advice in this article, How to Use Old Digital Cameras: 5 Steps.
Definitely worth a read to anyone who knows someone who wants to get into higher-end digital photography but doesn’t have hundreds of dollars to sling at a brand-new DSLR.
The advice might also be useful for someone who wants to dust off an old digital to lug around as a second camera.
I know, for myself, I have some old digital point-and-shoots around, and I’ll bring those to, say, a party or a wedding where my nieces and nephews will be in attendance, and I’ll hand the old cameras out to them (loaded with fresh batteries and recently-reformatted memory cards) and tell them to get out there and get some pics. But the last time I did that I was remiss in not making sure they understood how to keep their fingers away from the flash. A lot of pictures came out very dark as a result. Oh, well, mental note for next time—do a quick training session first!