Textbook for basic computer skills in Chinese for my parents?

Hi Guys, my parents are really old, and I don't know the terms for computer things in Chinese. I've been trying to explain things, but it's really hard. I have the language setting on the computer to be Chinese, so I can't read anything to explain it to them. I would convert it to English, but they can't read it very well.

Anyway, does anyone know of a book for basic (really basic, like clicking and dragging) computer skills in Chinese that I could give them to read? A Mac one would be great since that's what they're using, but a PC one would be fine too just to learn the basics.

I'd really like to get my parents to be able to email me, and to be able to Skype and things like that... Thanks for any help.