Thanks to all for your help. I'll have to humbly admit that I have been reading the manual. Some pages multiple times. It just didn't seem to explain enough for me. All of the advertising I read about etrex's kept saying how easy they are to operate. I just couldn't get it. My dog is very happy with my having trouble though...a lot more walks (and longer ones) for her, while I tried the read-the-manual-and-actually-do-it routine. Thanks to the kind souls who gave me tips and term explanations. I've printed out all your responses and will give it another whirl. And to the nice person who knew what xiaojie meant, I used to be a linguist in the military.
Thanks so much!